CN110819898B - A kind of high-strength corrosion-resistant zirconium-containing stainless steel and preparation method thereof - Google Patents
A kind of high-strength corrosion-resistant zirconium-containing stainless steel and preparation method thereof Download PDFInfo
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
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Abstract
The invention provides high-strength corrosion-resistant zirconium-containing stainless steel which comprises the following components in percentage by mass: less than or equal to 0.3 percent of C, less than or equal to 1.0 percent of Si, less than or equal to 2.0 percent of Mn, Cr: 16-19%, Ni: 12-19%, Mo: 1.8-3%, Zr: 0.1-6%, Hf: 0.002-0.12%, Ti: 0.1-2%, and the balance of Fe and other inevitable impurities. The high-strength corrosion-resistant zirconium-containing stainless steel is obtained by the following preparation method: smelting the raw materials to obtain an alloy ingot; then carrying out hot rolling treatment on the alloy cast ingot to obtain an alloy plate; and carrying out solution treatment on the alloy plate and then quenching treatment to obtain the high-strength corrosion-resistant zirconium-containing stainless steel. The stainless steel containing zirconium provided by the invention has high strength and excellent corrosion resistance.
Description
Technical Field
The invention belongs to the technical field of materials, and particularly relates to high-strength corrosion-resistant zirconium-containing stainless steel and a preparation method thereof.
Background
The stainless steel is resistant to the corrosion of weak corrosion media such as air, steam, water and the like and chemical corrosion media such as acid, alkali, salt and the like, has excellent corrosion resistance and excellent mechanical properties, and is widely applied to high-temperature, high-pressure, humid and easily corrosive environments. Stainless steel provides satisfactory mechanical and corrosion properties for a wide range of industrial applications.
With the development of industry, the application of stainless steel is more extensive, especially with the large-scale and specialized development of ships, so that the ship industry has higher requirements for the strength of stainless steel, and with the aggravation of seawater pollution, the service environment of stainless steel is increasingly severe, and stainless steel faces a great challenge.
The traditional stainless steel generally adopts a strain-giving mode to refine crystal particles, the material tissue is uniform, and recrystallization is carried out to generate phase change, so that the physical property of the material is changed to improve the strength of the stainless steel, the treatment method is single, the cost is higher, and the preparation process is complicated.
Disclosure of Invention
The invention aims to provide high-strength corrosion-resistant zirconium-containing stainless steel and a preparation method thereof.
The invention provides high-strength corrosion-resistant zirconium-containing stainless steel which comprises the following components in percentage by mass: c: 0.25 to 0.35%, Si: 0.7-1.2%, Mn: 1.8-2.2%, Cr: 16-19%, Ni: 12-19%, Mo: 1.8-3%, Zr: 0.1-6%, Hf: 0.002-0.12%, Ti: 0.1-2%, and the balance of Fe and other inevitable impurities.
Preferably, the high-strength corrosion-resistant zirconium-containing stainless steel comprises the following components in percentage by mass: c: 0.3%, Si: 0.7%, Mn: 1.8%, Cr: 17%, Ni: 15%, Mo: 2.3%, Zr: 0.4-6%, Hf: 0.1 to 0.12%, Ti: 0.5-2%, and the balance of Fe and other inevitable impurities.
The invention provides a preparation method of the high-strength corrosion-resistant zirconium-containing stainless steel, which comprises the following steps:
(1) smelting raw materials for multiple times to obtain an alloy ingot, wherein the raw materials comprise a C source, a Si source, a Mn source, a Cr source, a Ni source, a Mo source, a Zr source, a Hf source, a Ti source and a Fe source;
(2) heating the alloy ingot in the step (1) to a hot rolling temperature for hot rolling treatment to obtain an alloy plate;
(3) and (3) carrying out solution treatment and quenching treatment on the alloy plate in the step (2) to obtain the high-strength corrosion-resistant zirconium-containing stainless steel.
Preferably, the smelting in the step (1) is carried out in a non-consumable vacuum arc smelting furnace, and the vacuum degree of the smelting is 2 x 10-2And Pa, performing magnetic suspension stirring in the smelting process.
Preferably, the smelting in the step (1) is performed for 5-10 times.
Preferably, the temperature of the hot rolling treatment in the step (2) is 1080-1120 ℃.
Preferably, the hot rolling treatment in the hot step (2) is multi-pass rolling deformation, and the total deformation amount of the rolling deformation is 60-65%.
Preferably, the temperature rise rate in the step (2) is 10-20 ℃/min.
Preferably, the temperature of the solution treatment in the step (3) is 1000-1150 ℃ and the time is 20-30 min.
Preferably, the quenching treatment in the step (3) is water quenching, and the temperature of the quenching treatment is room temperature.
Has the advantages that: the invention provides high-strength corrosion-resistant zirconium-containing stainless steel which comprises the following components in percentage by mass: c: 0.25 to 0.35%, Si: 0.7-1.2%, Mn: 1.8-2.2%, Cr: 16-19%, Ni: 12-19%, Mo: 1.8-3%, Zr: 0.1-6%, Hf: 0.002-0.12%, Ti: 0.1-2%, and the balance of Fe and other inevitable impurities. According to the invention, the alloy element manganese is added into the steel material, so that the steel strength is improved, and the non-plastic transformation temperature of the steel is reduced. Manganese is added into steel, and most of manganese is dissolved in ferrite to form a substitutional solid solution, so that the ferrite is strengthened, and the strength and hardness of the steel are improved. According to the invention, the metal Zr is added into the steel material, so that the material generates lattice distortion, the lattice constant of the material is changed, the structure of the material is obviously refined, and the mechanical property and the corrosion resistance of the stainless steel are improved. Therefore, the Zr element is added into the steel, so that the mechanical strength and the corrosion resistance of the stainless steel are improved. The embodiment results show that the zirconium-containing stainless steel provided by the invention has high strength, excellent corrosion resistance and excellent microstructure, and compared with the traditional 316L stainless steel, the tensile strength is improved by 14.67-45.73%, the yield strength is improved by 10.79-23.14%, and the corrosion resistance is improved by 30-55%.
The invention also provides a preparation method of the high-strength corrosion-resistant zirconium-containing stainless steel, which is characterized in that C, Si, Mn, Cr, Ni, Mo, Zr, Hf, Ti and Fe are smelted to obtain alloy ingots; then carrying out hot rolling treatment on the alloy cast ingot to obtain an alloy plate; and finally, carrying out solid solution treatment on the alloy plate and then carrying out quenching treatment to obtain the high-strength corrosion-resistant zirconium-containing stainless steel. The preparation method of the invention has simple steps and easy operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic size diagram of a tensile specimen of a high-strength corrosion-resistant zirconium-containing stainless steel according to an embodiment of the present invention.
FIG. 2 is a metallographic optical micrograph of a high strength corrosion resistant zirconium-containing stainless steel alloy according to example 1 of the present invention.
FIG. 3 is a scanning electron microscope image of the high strength corrosion resistant zirconium-containing stainless steel alloy produced in example 1 of the present invention during corrosion.
Detailed Description
The invention provides high-strength corrosion-resistant zirconium-containing stainless steel which comprises the following components in percentage by mass: c: 0.25 to 0.35%, Si: 0.7-1.2%, Mn: 1.8-2.2%, Cr: 16-19%, Ni: 12-19%, Mo: 1.8-3%, Zr: 0.1-6%, Hf: 0.002-0.12%, Ti: 0.1-2%, and the balance of Fe and other inevitable impurities.
The high-strength corrosion-resistant zirconium-containing stainless steel provided by the invention comprises the following components in percentage by mass: 0.25 to 0.35%, preferably 0.3%.
The high-strength corrosion-resistant zirconium-containing stainless steel provided by the invention comprises the following components in percentage by mass: 0.7 to 1.2%, preferably 0.7%. In the present invention, Si can significantly improve the tensile strength of steel.
The high-strength corrosion-resistant zirconium-containing stainless steel provided by the invention comprises the following components in percentage by mass: 1.8-2.2%, preferably 1.8%. In the present invention, manganese is added to steel, and is mostly dissolved in ferrite to form a substitutional solid solution, so that the ferrite is strengthened, thereby improving the strength and hardness of the steel.
The high-strength corrosion-resistant zirconium-containing stainless steel provided by the invention comprises the following components in percentage by mass: 16-19%, preferably 17%. In the invention, chromium raises the electrode potential of the iron-based solid solution, and chromium absorbs electrons of iron to passivate the iron, thereby preventing the material from being corroded to obtain the stainless steel.
The high-strength corrosion-resistant zirconium-containing stainless steel provided by the invention comprises the following components in percentage by mass: 12 to 19%, preferably 15%. The nickel improves the strength of the steel and simultaneously enables the steel to have good plasticity and toughness; in addition, nickel has high acid and alkali resistance and has antirust and heat resisting capacity at high temperature.
The high-strength corrosion-resistant zirconium-containing stainless steel provided by the invention comprises the following components in percentage by mass: 1.8-3%, preferably 2.3%. In the invention, the addition of molybdenum improves the corrosion resistance of the steel in a reducing medium and improves the performances of pitting corrosion resistance, crevice corrosion resistance and the like of the steel.
The high-strength corrosion-resistant zirconium-containing stainless steel provided by the invention comprises the following components in percentage by mass: 0.1 to 6%, preferably 0.4 to 6%, more preferably 4 to 6%. In the invention, the Zr can cause the material to generate lattice distortion, change the lattice constant of the material, obviously refine the structure of the material and improve the mechanical property of the stainless steel.
The high-strength corrosion-resistant zirconium-containing stainless steel provided by the invention comprises the following components in percentage by mass: 0.002-0.12%, preferably 0.1-0.12%.
The high-strength corrosion-resistant zirconium-containing stainless steel provided by the invention comprises the following components in percentage by mass: 0.1 to 2%, preferably 0.5 to 2%. Ti is added into stainless steel and forms carbon and nitrogen compounds with C and N to be dispersed and distributed on a steel matrix, so that the strength of the steel is improved.
The invention limits the content of each element in a specific range, and obtains the high-strength corrosion-resistant zirconium-containing stainless steel under the synergistic action of each element.
The high-strength corrosion-resistant zirconium-containing stainless steel provided by the invention comprises the following elements, Fe and other inevitable impurities in balance, wherein the impurities are S and P, the content of S is preferably not more than 0.03%, and the content of P is preferably not more than 0.035%.
The invention provides a preparation method of the high-strength corrosion-resistant zirconium-containing stainless steel, which comprises the following steps:
(1) smelting raw materials for multiple times to obtain an alloy ingot, wherein the raw materials comprise a C source, a Si source, a Mn source, a Cr source, a Ni source, a Mo source, a Zr source, a Hf source, a Ti source and a Fe source;
(2) heating the alloy ingot in the step (1) to a hot rolling temperature for hot rolling treatment to obtain an alloy plate;
(3) and (3) carrying out solution treatment and quenching treatment on the alloy plate in the step (2) to obtain the high-strength corrosion-resistant zirconium-containing stainless steel.
The method comprises the step of smelting a C source, a Si source, a Mn source, a Cr source, a Ni source, a Mo source, a Zr source, a Hf source, a Ti source and a Fe source for multiple times to obtain an alloy ingot. In the invention, the smelting temperature is preferably 1700-1900 ℃, more preferably 1800-1900 ℃, and the smelting time is preferably 30-40 min, more preferably 33-35 min. In the present invention, the melting is preferably performed in a non-consumable vacuum arc melting furnace, the melting is preferably performed in a protective gas, the protective gas is preferably high-purity argon gas, the purity of the high-purity argon gas is preferably 99.9%, and the degree of vacuum of the melting is preferably 9 × 10-3～2×10-2Pa, more preferably 1.2X 10-2～1.8×10-2Pa. In the invention, magnetic suspension stirring is preferably carried out in the smelting process, and the stirring time is preferably 10-30 min, more preferably 18-25 min, and even more preferably 20-23 min. The invention has no special requirement on the stirring speed, as long as the stirring can be carried out.
In the invention, the smelting frequency is preferably 5-10 times, specifically 5 times, 7 times and 9 times, and the thickness of the alloy ingot is preferably 20 mm. In the invention, after each smelting, an oxide layer on the surface of the cast ingot is preferably ground on a grinding wheel and then cleaned by alcohol.
In the invention, the C source, the Si source, the Mn source, the Cr source, the Ni source, the Mo source, the Zr source, the Hf source, the Ti source and the Fe source are selected conventionally, and have no special requirements as long as the smelting can be satisfied.
According to the invention, raw materials are preferably cleaned before smelting, wherein the cleaning is preferably that a C source, a Si source, a Mn source, a Cr source, a Ni source, a Mo source, a Zr source, a Hf source, a Ti source and a Fe source are firstly subjected to ultrasonic cleaning in acetone and then subjected to ultrasonic cleaning in alcohol; the ultrasonic cleaning in acetone removes greasy dirt impurities on the surface of the raw material, the ultrasonic cleaning in alcohol removes acetone solution remained on the surface of the raw material, and the dried raw material is obtained by alcohol volatilization.
Before smelting, the water-cooled copper crucible of a non-consumable arc smelting furnace is preferably polished by sand paper and then wiped by alcohol, raw materials are put into the treated water-cooled copper crucible in the sequence of the lower layer with a lower melting point and the upper layer with a higher melting point, and the raw materials are laid in the sequence of Al, Fe, Mn, C, Ni, Si, Ti, Cr, Hf and Mo from bottom to top in the invention.
After the alloy ingot is obtained by smelting, the alloy ingot is heated to the hot rolling temperature for hot rolling treatment to obtain an alloy plate. In the present invention, the temperature rise is preferably carried out in a muffle furnace, and the source and model of the muffle furnace are not particularly limited in the present invention, and a muffle furnace known to those skilled in the art can be used. In the embodiment of the invention, the muffle furnace is a muffle furnace with a model number of KL-13, which is produced by Kai constant electro-thermal technology, Inc. of Tianjin. In the invention, the heating rate is preferably 10-20 ℃/min, more preferably 10-15 ℃/min, and even more preferably 10 ℃/min. Specifically, in the embodiment of the invention, the alloy ingot is cooled and then removed from a non-consumable arc melting furnace and transferred to a muffle furnace, wherein the cooling is preferably natural cooling along with the furnace, and the cooling temperature is preferably 40-60 ℃.
In the invention, the temperature of the hot rolling treatment is preferably 1080-1120 ℃, the alloy ingot is preferably subjected to heat preservation treatment at the temperature of the hot rolling treatment, and the time of the heat preservation treatment is preferably 2 hours. According to the invention, the alloy cast ingot after heat preservation treatment is preferably taken out quickly for rolling deformation, so that the temperature drop of the sample after the sample is separated from the muffle furnace is avoided, and in the invention, the temperature drop is preferably 10-20 ℃, and more preferably 12-16 ℃.
In the invention, the hot rolling treatment is preferably multi-pass rolling deformation, and the reduction of each pass in the multi-pass rolling deformation process is 2-3 mm; in the invention, after each pass of rolling, the rolled plate obtained in each pass is preferably placed in a muffle furnace again to be heated to the hot rolling treatment temperature, the heating rate is preferably 10-20 ℃/min, more preferably 10-15 ℃/min, and even more preferably 10 ℃/min, and the temperature is kept at the hot rolling treatment temperature for 10 minutes. And repeating the steps until the alloy cast ingot is finally rolled into an alloy plate with the thickness of 5 mm. In the present invention, the multi-pass rolling deformation is preferably performed on a twin-roll mill, and the source and model of the twin-roll mill are not particularly limited in the present invention, and a twin-roll mill known to those skilled in the art may be used. In the invention, the number of times of the multi-pass rolling deformation is preferably 6-7, and the total deformation amount of the rolling deformation is preferably 60-65%.
After the alloy plate is obtained, the alloy plate is subjected to solution treatment and then quenching treatment to obtain the high-strength corrosion-resistant zirconium-containing stainless steel. In the invention, the temperature of the solution treatment is preferably 1000-1150 ℃, more preferably 1050-1130 ℃, and the time is preferably 20-30 min, more preferably 24-28 min; the quenching treatment is preferably water quenching, and the temperature of the quenching treatment is preferably room temperature.
According to the invention, the polishing treatment and the cleaning treatment are preferably carried out after the water quenching treatment, so that the oxide skin on the surface of the stainless steel is removed. The polishing treatment and the cleaning treatment can be carried out by adopting a conventional method without special requirements.
For further illustration of the present invention, the high strength corrosion resistant zirconium-containing stainless steel provided by the present invention will be described in detail below with reference to the accompanying drawings and examples, which should not be construed as limiting the scope of the present invention.
Example 1
The high-strength corrosion-resistant zirconium-containing stainless steel provided by the embodiment 1 comprises the following components in percentage by mass: 0.5% of zirconium, 0.5% of titanium, 0.01% of hafnium, 0.3% of carbon, 0.7% of silicon, 1.8% of manganese, 17% of chromium, 15% of nickel, 2.3% of molybdenum and the balance of iron. Sequentially carrying out ultrasonic cleaning treatment on zirconium, titanium, hafnium, carbon, silicon, manganese, chromium, nickel, molybdenum and iron in acetone and alcohol according to the mass percentage, sequentially putting Fe, Al, Mn, C, Ni, Si, Ti, Cr, Hf and Mo into a water-cooled copper crucible of a non-consumable vacuum arc melting furnace which is polished and scrubbed in advance according to the sequence from bottom to top, and setting the vacuum degree in a furnace cavity to be 2 multiplied by 10-2And Pa, introducing high-purity argon as protective gas before smelting, and adding magnetic suspension and stirring to uniformly mix. Repeatedly smelting and turning the ingot for five times to obtain an alloy ingot; after each smelting, turning the cast ingot, polishing a surface oxide layer on a grinding wheel, and cleaning with alcohol. Then the alloy ingot taken out is heated to 1100 ℃ at a heating rate of 10 ℃ per minute and is kept warm for 2 hours, and first hot rolling is carried out. And after the first rolling is finished, putting the product subjected to the first rolling into a muffle furnace, reheating to 1100 ℃, preserving heat for 10 minutes, carrying out hot rolling treatment, and repeating the operation for 5 times to obtain an alloy plate, wherein the thickness of the alloy plate is 5mm, and the deformation of the hot rolling treatment reaches 61%. After the final pass rolling, carrying out solid solution treatment, keeping the temperature of the solid solution treatment at 1050 ℃ for 30 minutes, then carrying out water quenching treatment, cooling to normal temperature, taking out, finely grinding an oxide layer on the surface of the alloy plate, cleaning the alloy plate,obtaining the high-strength corrosion-resistant zirconium-containing stainless steel.
Metallographic structure observation was performed on the high-strength corrosion-resistant zirconium-containing stainless steel in example 1 to obtain a metallographic optical micrograph of the high-strength corrosion-resistant zirconium-containing stainless steel alloy, which is shown in fig. 2.
A scanning electron microscope is used for observing a sample obtained after the full immersion weight loss experiment is carried out on the high-strength corrosion-resistant zirconium-containing stainless steel in the example 1, and an electron microscopic picture of the high-strength corrosion-resistant zirconium-containing stainless steel after corrosion is obtained, namely a picture shown in figure 3.
Example 2
The high-strength corrosion-resistant zirconium-containing stainless steel provided by the embodiment 2 comprises the following components in percentage by mass: 3% of zirconium, 1.5% of titanium, 0.1% of hafnium, 0.3% of carbon, 0.7% of silicon, 1.8% of manganese, 17% of chromium, 15% of nickel, 2.3% of molybdenum and the balance of iron. Sequentially carrying out ultrasonic cleaning treatment on zirconium, titanium, hafnium, carbon, silicon, manganese, chromium, nickel, molybdenum and iron in acetone and alcohol according to the mass percentage, sequentially putting Fe, Al, Mn, C, Ni, Si, Ti, Cr, Hf and Mo into a water-cooled copper crucible of a non-consumable vacuum arc melting furnace which is polished and scrubbed in advance according to the sequence from bottom to top, and setting the vacuum degree in a furnace cavity to be 1.4 multiplied by 10- 2And Pa, introducing high-purity argon as protective gas before smelting, and adding magnetic suspension and stirring to uniformly mix. Repeatedly smelting and turning the ingot casting for seven times to obtain an alloy ingot casting; after each smelting, turning the cast ingot, polishing a surface oxide layer on a grinding wheel, and cleaning with alcohol. The alloy ingot taken out was then heated to 1115 ℃ at a heating rate of 15 ℃ per minute and held for 2 hours for the first hot rolling. And after the first rolling is finished, putting the product subjected to the first rolling into a muffle furnace, reheating to 1115 ℃, preserving heat for 10 minutes, performing hot rolling treatment, and repeating the operation for 6 times to obtain an alloy plate, wherein the thickness of the alloy plate is 5mm, and the deformation of the hot rolling treatment reaches 63%. After the final pass rolling, carrying out solution treatment, keeping the temperature of the solution treatment at 1100 ℃ for 25 minutes, then carrying out water quenching treatment, cooling to normal temperature, taking out, finely grinding an oxide layer on the surface of the alloy plate, and cleaning to obtain the high-strength corrosion-resistant zirconium-containing alloy plateAnd (3) stainless steel.
Example 3
The high-strength corrosion-resistant zirconium-containing stainless steel provided by the embodiment 1 comprises the following components in percentage by mass: 6% of zirconium, 6% of titanium, 0.12% of hafnium, 0.3% of carbon, 0.7% of silicon, 1.8% of manganese, 17% of chromium, 15% of nickel, 2.3% of molybdenum and the balance of iron. Sequentially carrying out ultrasonic cleaning treatment on zirconium, titanium, hafnium, carbon, silicon, manganese, chromium, nickel, molybdenum and iron in acetone and alcohol according to the mass percentage, sequentially putting Fe, Al, Mn, C, Ni, Si, Ti, Cr, Hf and Mo into a water-cooled copper crucible of a non-consumable vacuum arc melting furnace which is polished and scrubbed in advance according to the sequence from bottom to top, and setting the vacuum degree in a furnace cavity to be 1.6 multiplied by 10- 2And Pa, introducing high-purity argon as protective gas before smelting, and adding magnetic suspension and stirring to uniformly mix. Repeatedly smelting and turning the ingot casting for nine times to obtain an alloy ingot casting; after each smelting, turning the cast ingot, polishing a surface oxide layer on a grinding wheel, and cleaning with alcohol. Then the alloy ingot taken out is heated to 1090 ℃ at the heating rate of 17 ℃ per minute and is kept warm for 2 hours, and the first hot rolling is carried out. And after the first rolling is finished, putting the product subjected to the first rolling into a muffle furnace, reheating to 1090 ℃ and preserving heat for 10 minutes, carrying out hot rolling treatment, and repeating the operation for 5 times to obtain an alloy plate, wherein the thickness of the alloy plate is 5mm, and the deformation of the hot rolling treatment reaches 61%. And after the final pass rolling, carrying out solution treatment, keeping the temperature of the solution treatment at 1125 ℃ for 20 minutes, then carrying out water quenching treatment, cooling to normal temperature, taking out, finely grinding an oxide layer on the surface of the alloy plate, and cleaning to obtain the high-strength corrosion-resistant zirconium-containing stainless steel.
Tensile test pieces as shown in fig. 1 were cut out from the high-strength corrosion-resistant zirconium-containing stainless steels and the comparative material 316L stainless steels in examples 1 to 3 by wire cutting, and the test results are shown in table 1.
The high-strength corrosion-resistant zirconium-containing stainless steel and the 316L stainless steel of the comparative material in examples 1 to 3 were cut into full immersion weight loss test samples with the size of 10mm by 2mm by wire cutting, and 3 samples were cut from each piece of stainless steel, so that the repeatability of the test was ensured. And six surfaces of the sample are polished to 3000# by using SiC abrasive paper, and then the surface of the sample is cleaned and dried by using cold air. Before the start of the experiment, the original mass of the samples was measured on a balance, each sample was weighed three times, the accuracy was guaranteed by taking the average and making a corresponding record. Soaking in 0.5mol/L HCl solution at 25 deg.C for 10 days, changing new solution every two days during soaking, ultrasonic cleaning the sample in alcohol for 15min after each solution change, weighing with balance, and recording the change of weight. Experimental data on corrosion of this material were thus obtained and are given in table 2.
Table 1: mechanical property test results of embodiments 1 to 3 of the present invention
TABLE 2 Total weight loss in immersion test results of examples 1 to 3 of the present invention
Metallographic structure observation of the high-strength corrosion-resistant zirconium-containing stainless steel in examples 1 to 3 shows that the metallographic phase of the high-strength corrosion-resistant zirconium-containing stainless steel obtained in examples 1 to 3 is mainly an austenite phase, and compared with 316L stainless steel, the grain has an obvious refining tendency. Due to the refinement of the crystal grains, according to a Hall-Petch formula, the tensile strength of the material is enhanced along with the refinement of the crystal grains.
The results of the experiment show that the tensile strength is increased 45.73% with the addition of zirconium at a level of 6%. Meanwhile, through a full immersion weight loss experiment, the corrosion resistance of the high-strength corrosion-resistant zirconium-containing stainless steel is improved compared with that of 316L stainless steel, and the improvement amount is 52.63%.
Although the present invention has been described in detail with reference to the above embodiments, it is only a part of the embodiments of the present invention, not all of the embodiments, and other embodiments can be obtained without inventive step according to the embodiments, and the embodiments are within the scope of the present invention.
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| JP2005171339A (en) * | 2003-12-12 | 2005-06-30 | Hitachi Ltd | High strength, high toughness, high corrosion resistance martensitic steel, steam turbine blades and steam turbine power plant |
| CN100580122C (en) * | 2006-12-19 | 2010-01-13 | 中国科学院金属研究所 | A kind of martensitic antibacterial stainless steel and heat treatment method thereof |
| JP5804792B2 (en) * | 2011-06-16 | 2015-11-04 | 新日鐵住金ステンレス株式会社 | Ferritic stainless steel sheet excellent in hot workability and weather resistance and manufacturing method thereof |
| JP2017128775A (en) * | 2016-01-21 | 2017-07-27 | コベルコ鋼管株式会社 | Stainless steel and stainless steel pipe |
| CN109355598A (en) * | 2018-12-22 | 2019-02-19 | 中南大学 | A kind of copper-containing zirconium-cobalt high corrosion-resistant stainless steel and its processing and heat treatment method |
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| JPS63199849A (en) * | 1987-02-13 | 1988-08-18 | Daido Steel Co Ltd | Tendon material for oil ring and its production |
| CN106367694A (en) * | 2016-08-31 | 2017-02-01 | 浙江恒源钢业有限公司 | Ultra-low-carbon austenite seamless stainless steel tube and preparation method for seamless stainless steel tube |
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