WO2005068674A1 - オーステナイト系ステンレス鋼及びその製造方法並びにそれを用いた構造物 - Google Patents
オーステナイト系ステンレス鋼及びその製造方法並びにそれを用いた構造物 Download PDFInfo
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- WO2005068674A1 WO2005068674A1 PCT/JP2005/000274 JP2005000274W WO2005068674A1 WO 2005068674 A1 WO2005068674 A1 WO 2005068674A1 JP 2005000274 W JP2005000274 W JP 2005000274W WO 2005068674 A1 WO2005068674 A1 WO 2005068674A1
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/001—Heat treatment of ferrous alloys containing Ni
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/02—Hardening by precipitation
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S376/00—Induced nuclear reactions: processes, systems, and elements
- Y10S376/90—Particular material or material shapes for fission reactors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
Definitions
- the present invention relates to an austenitic stainless steel excellent in stress corrosion cracking resistance, a method for producing the same, and a structure using the same.
- Mo-containing low-carbon austenitic stainless steels have better resistance to stress corrosion cracking under high-temperature and high-pressure water than austenitic stainless steels that do not contain Mo, which are difficult to sensitize. It has been frequently used as a constituent material for piping and furnace internals.
- the present inventors have prototyped various Mo-containing low carbon austenitic stainless steels in which the amount of N is further increased in order to increase the stacking fault energy of austenite and the amount of Si is systematically changed. Then, a stress corrosion cracking test was conducted in high-temperature and high-pressure water1 and compared. As a result, it was found that when the N content is 0.01% or less and the Si content is 0.1% or less, the austenite matrix is work-hardened1 and the stress corrosion cracking resistance of the cold-worked material is remarkably improved.
- the Cr content is increased so that the strength such as yield strength or tensile strength is not insufficient due to the reduction of the amount of N and Si, which improves the life of stress corrosion cracking.
- the stability of austenite was insufficient due to the reduction of the amounts of N, C, and N
- a low-carbon austenitic stainless steel containing Mo with increased Ni was prototyped and subjected to stress corrosion cracking tests in high-temperature, high-pressure water. Comparatively studied. As a result, stress corrosion cracking resistance was significantly improved.
- each of the Ca content and the Mg content is suppressed to 0.001% or less, the Mo-containing low-carbon austenitic stainless steel added with!, Zr, B, or Hf, or ( (Cr equivalent)-(Ni equivalent) was controlled to -5-+ 7% .Mo-containing low-carbon austenitic stainless steel, and Cr carbide precipitated at the grain boundaries consistent with the austenite crystal matrix phase of M23C6.
- Mo-containing low-carbon austenitic stainless steel added with!, Zr, B, or Hf, or ( (Cr equivalent)-(Ni equivalent) was controlled to -5-+ 7% .Mo-containing low-carbon austenitic stainless steel, and Cr carbide precipitated at the grain boundaries consistent with the austenite crystal matrix phase of M23C6.
- Mo-containing low-carbon austenitic stainless steel whose Cr equivalent)-(Ni equivalent) is controlled to 5 + 7% and Z or Cr equivalent ZNi equivalent is controlled to 0.7-1.4 It has been found that the rate of propagation of intergranular stress corrosion cracking can be significantly reduced.
- stacking fault energy calculated by the following equation (1):
- the present invention has been completed from a compact viewpoint.
- C 0.030% or less
- Si 0.1% or less, preferably 0.1% by weight.
- Mn 2.0% or less
- P 0.03% or less
- S 0.002% or less, preferably 0.001% or less
- Mo 3% or less
- N Austenitic stainless steel excellent in stress corrosion cracking resistance, characterized by containing 0.01% or less and the balance substantially consisting of Fe and inevitable impurities.
- C 0.030% or less, Si: 0.1% or less, preferably 0.02% or less, Mn: 2.0% or less, P: 0.03% or less, S: 0.002% or less, preferably 0.001% or less by weight.
- % Or less Ni: ll% —26%, Cr: 17% —30%, Mo: 3% or less, N: 0.01% or less, Ca: 0.001% or less, Mg: 0.001% or less, 0: 0.004% or less
- C 0.030% or less, Si: 0.1% or less, preferably 0.02% or less, Mn: 2.0% or less, P: 0.03% or less, S: 0.002% or less, preferably 0.001% or less by weight.
- % Or less Ni: ll% —26%, Cr: 17% —30%, Mo: 3% or less, N: 0.01% or less, Ca: 0.001% or less, Mg: 0.001% or less, 0: 0.004% or less
- It preferably contains 0.001% or less, further contains at least one of Zr, B or Hf at 0.01% or less, and the balance substantially consists of Fe and unavoidable impurities. It provides an austenitic stainless steel having excellent properties.
- the present invention provides an austenitic stainless steel excellent in any one of the above-mentioned stress corrosion cracking resistance,
- An object of the present invention is to provide an austenitic stainless steel excellent in corrosion resistance.
- (Cr equivalent)-(Ni equivalent) is preferably 0%.
- the Cr equivalent is, for example,
- Ni equivalent is, for example,
- Ni equivalent [% Ni] + 30x [% C] + 30x [% N] + 0.5x [% Mn] (all weight 0 /.) Or
- Ni equivalent [% Ni] + 22x [% C] + 14.2x [% N] + 0.31x [% Mn] + [% Cu] (all weight%)
- the present invention provides an austenitic stainless steel excellent in any one of the above-mentioned resistance to stress corrosion cracking,
- the present invention provides an austenitic stainless steel excellent in stress corrosion cracking resistance characterized by having a ZNi equivalent of 0.7 to 1.4.
- SFE stacking fault energy
- the present invention is characterized in that a steel slab (steel plate, forged steel product or steel pipe) made of the aforementioned austenitic stainless steel is subjected to a solution treatment at 1000 ° C. to 1150 ° C. And a method for producing stainless steel. Further, the present invention further provides a steel slab (steel plate, forged steel product or steel pipe), which has the strength of any of the above austenitic stainless steels, at a temperature of 1000 ° C. to 1150 ° C. Cold working, then 600 ° C—8
- An object of the present invention is to provide a method for producing an austenitic stainless steel, which is characterized by performing a carbide grain boundary precipitation heat treatment at 00 ° C for 150 hours.
- any of the above-described austenitic stainless steels can be particularly suitably used, for example, as austenitic stainless steel for reactor members such as reactor piping or reactor internals. Further, the stainless steel obtained by the above production method can also be suitably used as an austenitic stainless steel for a nuclear reactor member, as a constituent material of piping for a nuclear reactor or a structure in a reactor.
- the Mo-containing low carbon austenitic stainless steel of the present invention has excellent resistance to stress corrosion cracking, which is difficult to sensitize, and even if stress corrosion cracking occurs, stress corrosion cracking crack propagation
- these reactor components can be used for a long time.
- Cr carbide can be co-precipitated with the crystal matrix at the crystal grain boundaries.
- FIG. 1 A strip-shaped test piece prepared in the example is shown in (a). (A) After polishing the surface with an emery paper, it was attached to a jig shown in (b) and subjected to a stress corrosion cracking test.
- FIG. 2 System configuration of circulation autoclave for stress corrosion cracking test used in the examples.
- FIG. 3 is a diagram in which the stress corrosion crack length is plotted against the Cr content, and is a diagram in which the maximum crack length is plotted.
- FIG. 4 is a diagram in which the stress corrosion crack length is plotted against the Si content, and in which the maximum crack length is plotted.
- FIG. 5 is a diagram in which the stress corrosion crack length is plotted against the N content (a diagram in which the maximum crack length is plotted).
- FIG. 6 is a diagram plotting stress corrosion cracking length with respect to (Cr equivalent) ⁇ (Ni equivalent), and a diagram plotting a maximum crack length.
- FIG. 7 is a diagram plotting stress corrosion crack lengths with respect to Cr equivalents and ZNi equivalents, and plotting maximum crack lengths.
- FIG. 8 is a diagram plotting the stress corrosion cracking length with respect to the stacking fault energy and plotting the maximum crack length.
- FIG. 9 is a view showing a shape of a CT specimen for a stress corrosion crack propagation test used in the example.
- FIG. 10 is a diagram showing a configuration of a circulation autoclave system for a stress corrosion crack propagation test used in Examples.
- FIG. Ll A graph showing the effects of Zr addition, B addition, Hf addition, and grain boundary carbide precipitation treatment on the stress corrosion crack propagation speed of Mo-containing austenitic stainless steel.
- FIG. 12 is an explanatory view of main parts of (a) a boiling water reactor and (b) a pressurized water reactor.
- FIG. 13 is a longitudinal sectional view showing the internal configuration of the nuclear reactor shown in FIG.
- the contents of C, Si, Mn, P, S, Ni, Cr, Mo, and N are specified in terms of% by weight, and the balance is substantially Fe and unavoidable impurity power. Things.
- C is an austenitic stainless steel that is heated at a force of 400 ° C-900 ° C, which is an indispensable element for obtaining a specified strength and stabilizing austenite. It is well known that when this temperature range is gradually cooled, Cr carbides precipitate at the crystal grain boundaries, and a Cr-deficient layer is formed around the precipitates, causing the grain boundaries to become sensitized to corrosion. In order to suppress this sensitization, the C content is generally reduced to 0.03% or less.
- the C content is less than 0.03%, the strength is insufficient and the stability of austenite is insufficient. Therefore, conventionally, the strength of austenitic stainless steel is obtained and the austenite is stabilized in the same manner as C.
- N which is an important element in order to make a dani, to secure strength and to stabilize austenite.
- the inventors have found that increasing the N content makes it easier to harden when work strain or thermal strain is applied, and that when exposed to heat, precipitates Cr nitrides and lowers the Cr content in the crystalline matrix. On the contrary, the inventors focused on the fact that stress corrosion cracking is likely to occur. Breaking the conventional wisdom, in the present invention, the N content was reduced, and it was considered desirable to reduce the N content to a level at which it could be industrially stabilized. The N content was set to 0.01% or less. .
- Si plays an important role as a deoxidizing material, and usually contains about 0.5%.
- the present inventors have paid attention to the fact that the Si amount of about 0.5% is easily hardened when working strain or thermal strain is applied, and in the present invention, the Si amount is also industrially reduced stably. Since it is desirable to reduce as much as possible, it is set to 0.1% or less, preferably 0.02% or less.
- Cr and Mo are forces that are known to be extremely important elements for maintaining the corrosion resistance of austenitic stainless steel.
- Cr and Mo are ferrite-forming elements. It is known that the stability is deteriorated, and that the ductility of austenitic stainless steel is lowered and the workability is deteriorated. For this reason, Cr and Mo contents have conventionally been kept from being extremely high.
- the present inventors considered that the amount of C, N, and Si was reduced as much as possible in order to improve the stress corrosion cracking resistance. As a result, the ductility of the austenitic stainless steel could be increased at the same time.
- Mg may be added to austenitic stainless steel to improve hot workability.
- this Mg also segregates at the crystal grain boundaries, and there is a fear that the intergranular corrosion resistance is reduced. Therefore, in the present invention, it is preferable that the Mg is also reduced using a carefully selected raw material so as not to be mixed as much as possible, so that the intergranular corrosion resistance is not reduced.
- Zr, B, and Hf are well known as elements that segregate at crystal grain boundaries.These segregation makes conventional intergranular corrosion easier, and B and Hf undergo transmutation when irradiated with neutrons. Because of its large neutron absorption cross section, it has been regarded as an element that should not be used in corrosion-resistant austenitic stainless steel for nuclear power. However, in the present invention, by using an austenitic stainless steel in which the amounts of C, N, and Si are reduced as much as possible, even if a small amount of Zr, B, or Hf of 0.01% or less is added, the grain resistance of the austenitic stainless steel is reduced. It can significantly reduce the crack propagation speed of stress corrosion cracking in high temperature and high pressure water without reducing interfacial corrosion.
- austenitic stainless steel is used as it is in solution treatment, while avoiding sensitization.
- the present inventors have found that the precipitation of Cr carbide, which is consistent with the crystal matrix at the grain boundaries of austenitic stainless steel, can significantly reduce the rate of stress corrosion crack propagation in high-temperature, high-pressure water. did. Therefore, in the production method of the present invention, in order to positively precipitate the Cr carbide coherently precipitated with the crystal matrix, 10 to 30% cold working is performed after the solution treatment, and then 1 to 600 to 800 ° C. It is preferable to perform the Cr carbide precipitation treatment for 150 hours.
- the austenitic stainless steel can be particularly suitably used, for example, as a pipe for a nuclear reactor or a structural material in a reactor. In addition, the step obtained by the above-described manufacturing method. Stainless steel can also be suitably used as a constituent material of piping for a nuclear reactor or a structure inside a reactor.
- specific embodiments will be described with reference to the drawings.
- Figs. 12 (a) and 12 (b) are main parts explanatory diagrams of a boiling water reactor and a pressurized water reactor, respectively.
- Figs. 13 (a) and 13 (b) show the internal structure of each reactor shown in Fig. 12.
- FIG. 12 (a) and 12 (b) are main parts explanatory diagrams of a boiling water reactor and a pressurized water reactor, respectively.
- Figs. 13 (a) and 13 (b) show the internal structure of each reactor shown in Fig. 12.
- FIG. 12 (a) and 12 (b) are main parts explanatory diagrams of a boiling water reactor and a pressurized water reactor, respectively.
- FIG. 13 (a) and 13 (b) show the internal structure of each reactor shown in Fig. 12.
- FIG. 12 (a) and 12 (b) are main parts explanatory diagrams of a boiling water reactor and a pressurized water reactor, respectively.
- FIG. 13 (a) and 13 (b) show the internal structure of each reactor shown in
- a fuel assembly (fuel rod) 41 for generating a nuclear reaction is installed inside a reactor core shroud 42 in a reactor pressure vessel 40, and a lower portion or an upper portion of the fuel assembly 41 A control rod guide tube or a control rod drive mechanism 44 is installed. These devices are fixed by a core support plate 45 and fuel support fittings. Further, the uppermost portion of the fuel assembly 41 is fixed by the upper support plate 47.
- the hot water that has become hot in the fuel assembly 41 is supplied to the steam generator 54 through the high-temperature side pipe 53, and the steam generator 54 Then, the heat is exchanged at, the temperature becomes low, and the temperature is returned to the reactor pressure vessel 40 via the primary coolant pump 55 via the low temperature side piping 56.
- the low-temperature side pipe 56 and the high-temperature side pipe 53 are connected via a binos pipe 59 having an on-off valve 58.
- the components such as various pipes and pumps constituting each system and the circulation circuit of the above-described nuclear reactor, or the reactor internal structures such as the core shroud 42, the core support plate 45, the fuel support bracket, the upper support plate 47, and the like.
- the austenitic stainless steel of the present invention it can be used for a long time even under a high temperature and high pressure water environment where stress corrosion cracking hardly occurs.
- stress corrosion cracking occurs, it is difficult for crack propagation of stress corrosion cracking to occur, which has a remarkable effect on improving the safety and reliability of nuclear power plants.
- Example Table 1 shows conventional SUS 316 (comparative material 1), 316 NG (comparative material 2), which is widely used as a nuclear power material, and the chemical components of the present invention (contents are all% by weight). The composition of trial material 1 is shown.
- Table 2 shows the processing and heat treatment conditions for each prototype material shown in Table 1.
- Condition 2 950 to 1250 at a processing rate of 1000 to 1150 at 30 minutes / room temperature to 250 at 10 to 30% 600 to 800 at 1 to 50 hours
- Fig. 1 The lumber was processed into test pieces having the shape shown in Fig. 1.
- Fig. A 3,000-hour stress corrosion cracking test was performed in the autoclave shown in Table 2 under the test conditions shown in Table 4.
- the water quality is adjusted in the make-up water tank 11, degassed with N gas, and the preheater 15 is
- Figure 3-8 shows the maximum crack length plotted against the amount of each component element (Cr, Si, N), (Cr equivalent) (Ni equivalent), Cr equivalent ZNi equivalent or stacking fault energy.
- FIG. 3 shows the effect of the amount of Cr on the stress corrosion cracking resistance of Mo-containing austenitic stainless steel. As the Cr content increased, the stress corrosion cracking resistance of the Mo-containing austenitic stainless steel improved.
- FIG. 4 shows the effect of Si content on the stress corrosion cracking resistance of Mo-containing austenitic stainless steel. As the amount of Si was reduced, the length of stress corrosion cracking was smaller, and the stress corrosion cracking resistance of Mo-containing austenitic stainless steel was improved.
- FIG. 5 shows the effect of N content on stress corrosion cracking resistance of Mo-containing austenitic stainless steel. As the N content decreased, the length of stress corrosion cracking became smaller, and the stress corrosion cracking resistance of Mo-containing austenitic stainless steel improved.
- FIG. 6 shows the effect of (Cr equivalent) ⁇ (Ni equivalent) on stress corrosion cracking resistance of Mo-containing austenitic stainless steel.
- (Cr equivalent)-(Ni equivalent) increased, the stress corrosion crack length became smaller, and the stress corrosion cracking resistance of the Mo-containing austenitic stainless steel improved.
- FIG. 7 shows the effect of Cr equivalent and ZNi equivalent on the stress corrosion cracking resistance of Mo-containing austenitic stainless steel.
- Cr equivalent The smaller the ZNi equivalent, the smaller the stress corrosion crack length and the higher the stress corrosion cracking resistance of the Mo-containing austenitic stainless steel.
- FIG. 8 shows the effect of lamination on the stress corrosion cracking resistance of Mo-containing austenitic stainless steel. This shows the effect of the defect energy [the value calculated by the following equation (1)] (maximum crack length).
- an alloy having a Cr content of 17% or more, desirably 20% or more, an N content of 0.01% or less, and a Si content of 0.1% or less, preferably 0.02% or less It was found that the occurrence of stress corrosion cracking significantly shifted to the longer life side.
- test materials shown in Table 1 were processed into test pieces having the shape shown in FIG. These test pieces were subjected to a stress corrosion crack propagation test in an autoclave shown in Fig. 10 under the test conditions shown in Table 5.
- the water quality is adjusted in the make-up water tank 30, and after degassing with N gas, the high-pressure metering pump (
- High-pressure and high-pressure water is sent to the autoclave, which is the test vessel 35, through the preheater 34 by the make-up water pump 31 and part of the water is circulated.
- a regenerative heat exchanger 32 for connecting the cooler 33 is provided in the preceding stage of the preheater 34.
- a heater 36 is installed near the test container 35.
- Fig. 11 shows a test to examine the effects of Zr addition, B addition, Hf addition, and grain boundary carbide precipitation treatment on the stress corrosion crack propagation rate of Mo-containing austenitic stainless steel.
- the results for crops 12, 15, 19 and carbide precipitates are shown together with the conventional materials (316NG).
- the stress corrosion crack propagation speed is lower than that of conventional materials, and the stress corrosion cracking resistance of Mo-containing austenitic stainless steel is lower. It turned out to be improved.
- the austenitic stainless steel of the present invention has excellent resistance to stress corrosion cracking, which is difficult to sensitize, and even if stress corrosion cracking occurs, it is difficult for cracks to propagate through stress corrosion cracking. It is particularly suitable as a material for various piping and internal structures of operating nuclear reactors, and is of great industrial significance from the viewpoint of improving the safety and reliability of nuclear power plants.
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Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/585,885 US8172959B2 (en) | 2004-01-13 | 2005-01-13 | Austenitic stainless steel, manufacturing method for the same, and structure using the same |
| CN200580007157.6A CN1942596B (zh) | 2004-01-13 | 2005-01-13 | 奥氏体不锈钢、其制造方法以及使用其的结构件 |
| EP05703513A EP1715071A4 (en) | 2004-01-13 | 2005-01-13 | AUSTENITIC STAINLESS STEEL, METHOD OF MANUFACTURING THEREFOR AND STRUCTURE THEREWITH |
| MXPA06008027A MXPA06008027A (es) | 2004-01-13 | 2005-01-13 | Acero inoxidable austenitico, metodo de fabricacion del mismo y estructura que utiliza el mismo. |
| JP2005517050A JP4616772B2 (ja) | 2004-01-13 | 2005-01-13 | オーステナイト系ステンレス鋼及びその製造方法並びにそれを用いた構造物 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004004928 | 2004-01-13 | ||
| JP2004-004928 | 2004-01-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005068674A1 true WO2005068674A1 (ja) | 2005-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/000274 Ceased WO2005068674A1 (ja) | 2004-01-13 | 2005-01-13 | オーステナイト系ステンレス鋼及びその製造方法並びにそれを用いた構造物 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US8172959B2 (ja) |
| EP (1) | EP1715071A4 (ja) |
| JP (1) | JP4616772B2 (ja) |
| KR (1) | KR100848020B1 (ja) |
| CN (1) | CN1942596B (ja) |
| MX (1) | MXPA06008027A (ja) |
| TW (1) | TWI289606B (ja) |
| WO (1) | WO2005068674A1 (ja) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007277711A (ja) * | 2006-03-14 | 2007-10-25 | Furukawa Battery Co Ltd:The | 給鉛管 |
| JP2009079240A (ja) * | 2007-09-25 | 2009-04-16 | Tohoku Univ | オーステナイト系ステンレス鋼とその製造方法、原子炉内構造物及び配管 |
| JP4530112B1 (ja) * | 2009-03-27 | 2010-08-25 | 住友金属工業株式会社 | オーステナイト系ステンレス鋼 |
| WO2010110003A1 (ja) * | 2009-03-27 | 2010-09-30 | 住友金属工業株式会社 | オーステナイト系ステンレス鋼 |
| CN105177262A (zh) * | 2015-09-25 | 2015-12-23 | 安阳工学院 | 一种提高析出强化奥氏体耐热钢中特殊晶界比例的方法 |
| JP2018003162A (ja) * | 2011-05-26 | 2018-01-11 | ユナイテッド・パイプラインズ・アジア・パシフィック・プライベイト・リミテッドUnited Pipelines Asia Pacific Pte Limited | オーステナイト系ステンレス鋼 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5469516A (en) * | 1977-11-14 | 1979-06-04 | Hitachi Ltd | Heat treating method for austenitic stainless steel to prevent stress corrosion cracking |
| JPS649379B2 (ja) * | 1982-08-12 | 1989-02-17 | Kobe Steel Ltd | |
| JPH0297651A (ja) * | 1988-09-30 | 1990-04-10 | Aichi Steel Works Ltd | 制御圧延性の優れた快削オーステナイト系ステンレス鋼およびその製造方法 |
| JPH0414182B2 (ja) * | 1984-11-19 | 1992-03-12 | Suteyuudei Deroro Suteraito Inc | |
| JPH0559494A (ja) * | 1991-09-03 | 1993-03-09 | Hitachi Ltd | 耐照射誘起偏析に優れたオーステナイトステンレス鋼 |
| JPH07209485A (ja) * | 1994-01-18 | 1995-08-11 | Hitachi Ltd | 原子炉及び核融合炉 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3563728A (en) * | 1968-03-12 | 1971-02-16 | Westinghouse Electric Corp | Austenitic stainless steels for use in nuclear reactors |
| US4720435A (en) * | 1984-11-19 | 1988-01-19 | Haynes International, Inc. | Nuclear grade steel articles |
| JPH03267350A (ja) | 1990-03-16 | 1991-11-28 | Hitachi Ltd | 耐照射性オーステナイトステンレス鋼 |
| JP3001614B2 (ja) | 1990-07-11 | 2000-01-24 | 日新製鋼株式会社 | 極軟質オーステナイト系ステンレス鋼 |
| JP3217088B2 (ja) * | 1991-07-26 | 2001-10-09 | 三桜工業株式会社 | ステンレス鋼製多重巻きパイプ |
| JPH06122946A (ja) | 1992-08-25 | 1994-05-06 | Nippon Steel Corp | 耐粒界腐食性に優れたオーステナイト系ステンレス鋼 |
| KR950009223B1 (ko) * | 1993-08-25 | 1995-08-18 | 포항종합제철주식회사 | 프레스 성형성, 열간가공성 및 고온내산화성이 우수한 오스테나이트계 스테인레스강 |
| US5830408A (en) * | 1993-10-20 | 1998-11-03 | Sumitomo Metal Industries, Ltd. | Stainless steel for high-purity gases |
| JP2991050B2 (ja) | 1994-08-23 | 1999-12-20 | 住友金属工業株式会社 | 高純度ガス用ステンレス鋼管 |
| JPH09125205A (ja) * | 1995-09-01 | 1997-05-13 | Mitsubishi Heavy Ind Ltd | 耐中性子照射劣化高Niオーステナイト系ステンレス鋼 |
| JPH10317104A (ja) | 1997-05-16 | 1998-12-02 | Nippon Steel Corp | 耐粒界応力腐食割れ性に優れたオーステナイト系ステンレス鋼およびその製造方法 |
-
2005
- 2005-01-13 WO PCT/JP2005/000274 patent/WO2005068674A1/ja not_active Ceased
- 2005-01-13 TW TW094101023A patent/TWI289606B/zh not_active IP Right Cessation
- 2005-01-13 JP JP2005517050A patent/JP4616772B2/ja not_active Expired - Fee Related
- 2005-01-13 CN CN200580007157.6A patent/CN1942596B/zh not_active Expired - Lifetime
- 2005-01-13 EP EP05703513A patent/EP1715071A4/en not_active Withdrawn
- 2005-01-13 MX MXPA06008027A patent/MXPA06008027A/es active IP Right Grant
- 2005-01-13 US US10/585,885 patent/US8172959B2/en active Active
- 2005-01-13 KR KR1020067015424A patent/KR100848020B1/ko not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5469516A (en) * | 1977-11-14 | 1979-06-04 | Hitachi Ltd | Heat treating method for austenitic stainless steel to prevent stress corrosion cracking |
| JPS649379B2 (ja) * | 1982-08-12 | 1989-02-17 | Kobe Steel Ltd | |
| JPH0414182B2 (ja) * | 1984-11-19 | 1992-03-12 | Suteyuudei Deroro Suteraito Inc | |
| JPH0297651A (ja) * | 1988-09-30 | 1990-04-10 | Aichi Steel Works Ltd | 制御圧延性の優れた快削オーステナイト系ステンレス鋼およびその製造方法 |
| JPH0559494A (ja) * | 1991-09-03 | 1993-03-09 | Hitachi Ltd | 耐照射誘起偏析に優れたオーステナイトステンレス鋼 |
| JPH07209485A (ja) * | 1994-01-18 | 1995-08-11 | Hitachi Ltd | 原子炉及び核融合炉 |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007277711A (ja) * | 2006-03-14 | 2007-10-25 | Furukawa Battery Co Ltd:The | 給鉛管 |
| JP2009079240A (ja) * | 2007-09-25 | 2009-04-16 | Tohoku Univ | オーステナイト系ステンレス鋼とその製造方法、原子炉内構造物及び配管 |
| JP4530112B1 (ja) * | 2009-03-27 | 2010-08-25 | 住友金属工業株式会社 | オーステナイト系ステンレス鋼 |
| WO2010110003A1 (ja) * | 2009-03-27 | 2010-09-30 | 住友金属工業株式会社 | オーステナイト系ステンレス鋼 |
| JP2018003162A (ja) * | 2011-05-26 | 2018-01-11 | ユナイテッド・パイプラインズ・アジア・パシフィック・プライベイト・リミテッドUnited Pipelines Asia Pacific Pte Limited | オーステナイト系ステンレス鋼 |
| JP2019148013A (ja) * | 2011-05-26 | 2019-09-05 | ユナイテッド・パイプラインズ・アジア・パシフィック・プライベイト・リミテッドUnited Pipelines Asia Pacific Pte Limited | オーステナイト系ステンレス鋼 |
| JP2021191900A (ja) * | 2011-05-26 | 2021-12-16 | ユナイテッド・パイプラインズ・アジア・パシフィック・プライベイト・リミテッドUnited Pipelines Asia Pacific Pte Limited | オーステナイト系ステンレス鋼 |
| CN105177262A (zh) * | 2015-09-25 | 2015-12-23 | 安阳工学院 | 一种提高析出强化奥氏体耐热钢中特殊晶界比例的方法 |
| WO2020241851A1 (ja) * | 2019-05-31 | 2020-12-03 | 日本製鉄株式会社 | オーステナイト系ステンレス鋼材 |
| JPWO2020241851A1 (ja) * | 2019-05-31 | 2020-12-03 | ||
| JP7307366B2 (ja) | 2019-05-31 | 2023-07-12 | 日本製鉄株式会社 | オーステナイト系ステンレス鋼材 |
| US12221665B2 (en) | 2019-05-31 | 2025-02-11 | Nippon Steel Corporation | Austenitic stainless steel material |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1715071A4 (en) | 2007-08-29 |
| TWI289606B (en) | 2007-11-11 |
| EP1715071A1 (en) | 2006-10-25 |
| US20080308198A1 (en) | 2008-12-18 |
| CN1942596A (zh) | 2007-04-04 |
| MXPA06008027A (es) | 2007-03-07 |
| KR20070008563A (ko) | 2007-01-17 |
| TW200533766A (en) | 2005-10-16 |
| KR100848020B1 (ko) | 2008-07-23 |
| CN1942596B (zh) | 2010-11-17 |
| US8172959B2 (en) | 2012-05-08 |
| JP4616772B2 (ja) | 2011-01-19 |
| JPWO2005068674A1 (ja) | 2007-12-27 |
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