GB2118969A - Wear-resistant austenitic manganese steel - Google Patents
Wear-resistant austenitic manganese steel Download PDFInfo
- Publication number
- GB2118969A GB2118969A GB08211686A GB8211686A GB2118969A GB 2118969 A GB2118969 A GB 2118969A GB 08211686 A GB08211686 A GB 08211686A GB 8211686 A GB8211686 A GB 8211686A GB 2118969 A GB2118969 A GB 2118969A
- Authority
- GB
- United Kingdom
- Prior art keywords
- manganese
- carbon
- steel
- vanadium
- nil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000617 Mangalloy Inorganic materials 0.000 title claims description 8
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 21
- 239000011572 manganese Substances 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 14
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 14
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 11
- 239000010936 titanium Substances 0.000 claims abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 10
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 9
- 239000011651 chromium Substances 0.000 claims abstract description 9
- 238000005266 casting Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 229910052742 iron Inorganic materials 0.000 claims abstract description 5
- 239000011573 trace mineral Substances 0.000 claims abstract description 5
- 235000013619 trace mineral Nutrition 0.000 claims abstract description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 239000005864 Sulphur Substances 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000010791 quenching Methods 0.000 abstract description 2
- 230000000171 quenching effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 3
- 150000001247 metal acetylides Chemical class 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 2
- INZDTEICWPZYJM-UHFFFAOYSA-N 1-(chloromethyl)-4-[4-(chloromethyl)phenyl]benzene Chemical compound C1=CC(CCl)=CC=C1C1=CC=C(CCl)C=C1 INZDTEICWPZYJM-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- ZLANVVMKMCTKMT-UHFFFAOYSA-N methanidylidynevanadium(1+) Chemical class [V+]#[C-] ZLANVVMKMCTKMT-UHFFFAOYSA-N 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000000803 paradoxical effect Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
-
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
A steel, especially for castings, has the following composition, by weight:- Carbon 1.10% to 1.60% Manganese not less than 16% Vanadium 0.05% to 1.00% Chromium nil to 4.00% Titanium nil to 0.50% the balance being iron with tramp or trace elements and the manganese to carbon ratio being not less than 12:1. The heat treatment comprises water quenching from not less than 1000 DEG C and preferably 1100 DEG C.
Description
SPECIFICATION
Wear-resistant steel
This invention relates to wear-resistant steel and its object is to provide an improved steel of the
kind, known as austenitic manganese steel, having a high manganese and carbon content and typified
by British Standard BS 3100. 1 976. BW.10. which may be stated as:
Steel for austenitic manganese steel castings
Composition Element % min. % max.
Carbon 1.0 1.25-1.35 Silicon nil 1.00
Manganese 11.00 not specified
Phosphorus nil 0.07
Sulphur nil 0.06 the remainder being iron with unavoidable impurities.
BW. 10 castings must be supplied water-quenched from a temperature of not less than 1 0000C.
It is known to use, in austenitic manganese steels, carbide formers including, for example vanadium, tungsten, titanium, chromium, niobium, tantalum and molybdenum.
The presence of manganese in an amount of more than 14% has been discussed as not giving any advantage unless there is included, as an essential ingredient, titanium in the amount of 0.10.5% for 1623% manganese and 1.11.5% carbon. For such a composition, with or without chromium in the range nil to 4.0%, improved wear resistance is claimed.
Research leading to the present invention has shown that a high manganese content can be used with advantage in an austenitic steel composition without requiring the presence of titanium although, as would be expected, the presence of titanium as a secondary ingredient or trace element is not disadvantageous.
According to the invention, a heat-treated austenitic manganese steel has the following composition, by weight:- Carbon - 1.109/0 to 1.60% Manganese - not less than 16%
Vanadium - 0.05% to 1.00%
Chromium - nil to 4.00%
Titanium - nil to 0.50% the balance being iron with tramp or trace elements, unavoidably derived from the steel making materials or process, and the manganese to carbon ratio being not less than 12:1.
The heat treatment comprises water quenching from a temperature of not less than 1 0000C and preferably 1 000C which should be maintained for a duration of not less than 2 hours, depending on cross-section, to ensure solution of excess carbides.
The above composition provides a steel of improved hardness, whilst retaining adequate ductility
and resistance to impact with good expectation of improved wear resistance.
No satisfactory method is available by whicn to test for or predict wear resistance because wear in use is the result of not only the steel in question but of the material on which it works. Work hardening is an important factor in wear and, although it might seem paradoxical, high stress gouging abrasion will work harden the steel more rapidly than low stress grinding abrasion.
There are however some indicators of potential wear resistance, including difficulty in machining which has been experienced with our new composition steel and is an indication of good metal-tometal wear resistance.
Tests for hardness values and bend and charpy impact tests give good results and the microstructure exhibits fine carbides evenly dispersed across the crystal whereas, in the titanium, high manganese, steel mentioned above, the carbides occur in random clusters in the crystals and grain boundaries.
The even distribution of predominant relatively hard vanadium carbide gives improved initial hardness of the steel and could reasonably be expected to improve wear resistance. The vanadium carbides in the steel will reduce the tendency of the ductile austenitic material to spread.
Although the invention has been described using vanadium, the possibility of adding or substituting another carbide former or formers is not precluded provided that the other parameters are met, particularly the manganese to carbon ratio. In particular the use of niobium, in place of or in addition to vanadium, is envisaged. For example, up to 4.00% chromium can be used to reduce the vanadium content.
For the main constituents, the following proportions are preferred:
Carbon - 1.35% to 1.45%
Manganese - 19% to 20%
Vanadium - 0.25% to 0.35%.
The following Example is given of the constitution and test results of a heat-treated austenitic manganese steel casting in accordance with the invention.
(percentage
Chemical composition parts by weight)
Carbon 1.43
Silicon 0.60
Sulphur 0.008
Phosphorus 0.054
Manganese 19.40
Chromium 0.47
Nickel 0.19
Titanium 0.001
Vanadium 0.27
Heat treatment:
water-quenched from 11 000C Test results:
Bend: 60O unbroken
Charpy impact: 64 joules
Hardness value: 232 BHN.
The invention is not limited to the simple production of castings and may be applied, for example, to forged, rolled, extruded or other steel products, worked before the heat treatment. Machining may of course be carried out subsequently.
Claims (filed on 12th May 1982) 1 982) 1. A heat-treated austenitic manganese steel having the following composition, by weight:- Carbon - 1.10% to 1.60% Manganese - not less than 16%
Vanadium - 0.05% to 1.00%
Chromium - nil to 4.00%
Titanium - nil to 0.50% the balance being iron, with tramp or trace elements, and the manganese to carbon ratio being not less than 12:1.
2. A steel according to claim 1, in which the following constituents have the proportions, by weight:
Carbon - 1.35% to 1.45%
Manganese - 19% to 20%
Vanadium - 0.25% to 0.35%.
3. A steel according to claim 1 and having a constitution substantially as set forth in the Example given.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (3)
1. A heat-treated austenitic manganese steel having the following composition, by weight:- Carbon - 1.10% to 1.60% Manganese - not less than 16%
Vanadium - 0.05% to 1.00%
Chromium - nil to 4.00%
Titanium - nil to 0.50% the balance being iron, with tramp or trace elements, and the manganese to carbon ratio being not less than 12:1.
2. A steel according to claim 1, in which the following constituents have the proportions, by weight:
Carbon - 1.35% to 1.45%
Manganese - 19% to 20%
Vanadium - 0.25% to 0.35%.
3. A steel according to claim 1 and having a constitution substantially as set forth in the Example given.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08211686A GB2118969B (en) | 1982-04-22 | 1982-04-22 | Wear-resistant austenitic manganese steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08211686A GB2118969B (en) | 1982-04-22 | 1982-04-22 | Wear-resistant austenitic manganese steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2118969A true GB2118969A (en) | 1983-11-09 |
| GB2118969B GB2118969B (en) | 1986-03-26 |
Family
ID=10529870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08211686A Expired GB2118969B (en) | 1982-04-22 | 1982-04-22 | Wear-resistant austenitic manganese steel |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2118969B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5601782A (en) * | 1992-06-26 | 1997-02-11 | Shinhokoku Steel Corporation | Abrasive resistant high manganese cast steel |
| US20240270331A1 (en) * | 2023-02-14 | 2024-08-15 | Caterpillar Inc. | Composite track pad |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1444063A (en) * | 1973-06-19 | 1976-07-28 | Boehler & Co Ag Geb | Roll-plated material |
| GB1546282A (en) * | 1977-09-06 | 1979-05-23 | Raufoss Ammunisjonsfabrikker | Austenitic wear-restistant steel |
-
1982
- 1982-04-22 GB GB08211686A patent/GB2118969B/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1444063A (en) * | 1973-06-19 | 1976-07-28 | Boehler & Co Ag Geb | Roll-plated material |
| GB1546282A (en) * | 1977-09-06 | 1979-05-23 | Raufoss Ammunisjonsfabrikker | Austenitic wear-restistant steel |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5601782A (en) * | 1992-06-26 | 1997-02-11 | Shinhokoku Steel Corporation | Abrasive resistant high manganese cast steel |
| US20240270331A1 (en) * | 2023-02-14 | 2024-08-15 | Caterpillar Inc. | Composite track pad |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2118969B (en) | 1986-03-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19990422 |