High manganese steel containing tungsten

A technology of high manganese steel and content, applied in the field of alloy steel, to achieve the effect of improving impact wear resistance, increasing yield strength and improving hardenability

Inactive Publication Date: 2008-08-27
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Adding chromium, tungsten, RE and other alloying elements to ultra-high manganese steel can make the casting have good toughness, high initial hardness, improve the wear resistance life of the casting, and the degree of work hardening is higher than that of high manganese steel, and its wear resistance ratio is higher Manganese steel is better. At present, there is no report on the research on ultra-high manganese steel containing chromium, tungsten and rare earth elements RE.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1 Tungsten-containing high manganese steel

[0027] The tungsten-containing high-manganese steel of the present embodiment contains the chemical composition of the following mass percentages:

[0028] C: 1.05%, Si: 0.9%, Mn: 16%, P: 0.07%, S: 0.04%, W: 0.5%, the balance is Fe, after 1040℃ water toughening heat treatment, yield strength ≥ 400MPa, U-shaped notch Impact toughness≥150J / cm 2 .

[0029] When the high manganese steel in this example does not contain tungsten element, after water toughening heat treatment at 1040°C, the yield strength is ≥380MPa, and the U-shaped notched impact toughness is ≥147J / cm 2 .

[0030] When the high manganese steel in this example contains 0.2% of rare earth element RE, after water toughening heat treatment at 1040°C, the yield strength is ≥420MPa, and the U-notch impact toughness is ≥153J / cm 2 ;

[0031] When the high manganese steel in this example contains 1.5% tungsten element, after water toughening heat treatment...

Embodiment 2

[0032] Embodiment 2 Tungsten-containing high manganese steel

[0033] The tungsten-containing high-manganese steel of the present embodiment contains the chemical composition of the following mass percentages:

[0034] C: 1.18%, Si: 0.6%, Mn: 11.5%, P: 0.06%, S: 0.04%, W: 0.56%, the rest is Fe, after 1100℃ water toughening heat treatment, yield strength ≥ 400MPa, U-shaped notch impact Toughness≥150J / cm 2 .

[0035] When the high manganese steel in this example does not contain tungsten element, after water toughening heat treatment at 1100°C, the yield strength is ≥380MPa, and the U-shaped notched impact toughness is ≥147J / cm 2 .

[0036] When the high manganese steel in this example contains 0.5% of tungsten element and 0.25% of rare earth element RE, after water toughening heat treatment at 1100°C, the yield strength is ≥410MPa, and the U-notch impact toughness is ≥153J / cm 2 .

[0037] When the high manganese steel in this example contains 1.5% tungsten element, after w...

Embodiment 3

[0038] Embodiment 3 Tungsten-containing high manganese steel

[0039] The tungsten-containing high-manganese steel of the present embodiment contains the chemical composition of the following mass percentages:

[0040] C: 1.21%, Si: 0.52%, Mn: 12.8%, W: 0.96%, P: 0.056%, S: 0.038%, Cr: 1.87%, the rest is Fe, after 1100℃ water toughening heat treatment, yield strength ≥ 410MPa , U-shaped notch impact toughness ≥ 135J / cm 2 .

[0041] When the high manganese steel in this example does not contain tungsten element, after water toughening heat treatment at 1100°C, the yield strength is ≥400MPa, and the U-notch impact toughness is ≥110J / cm 2 .

[0042] When the high manganese steel in this example contains 0.01% of rare earth element RE, after water toughening heat treatment at 1100°C, the yield strength is ≥410MPa, and the U-notch impact toughness is ≥140J / cm 2 .

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Abstract

The invention discloses a high manganese steel which contains tungsten, and the high manganese steel contains chemical constituents in the following mass percent: C: 1.05%-1.35%, Si: 0.3%-0.9%, Mn: 11%-19%, W: 0.5%-1.5%, P<=0.070% and S<=0.045%, and the rest is Fe, furthermore, the high manganese steel also can contain a rare earth element RE, and the content of the RE is 0.01%-0.3%. The high manganese steel also can contain Cr and the content of the Cr is 1.2-2.5%. The high manganese steel which contains the tungsten of the invention is added with the elements of tungsten, rare earth element RE and chrome in particular when the content of the Mn is 16%-19%, which enables the whole high manganese steel to have the advantages of good toughness, high yield strength, high work hardening degree, better abrasive resistance and the like compared with the existing steel, and thereby the application range of the high manganese steel is enlarged. The high manganese steel of the invention is suitable for preparing fitting parts which are used in the working condition of abrasion and in particular to impact abrasion.

Description

technical field [0001] The invention relates to the field of alloy steel used for wear, in particular to a tungsten-containing high-manganese steel with fine grains, high yield strength, good impact toughness, high work hardening degree and comprehensive mechanical properties. Background technique [0002] At present, in metallurgy, electric power, building materials, construction, coal, chemical industry, railway, machinery and other industries with large impact load wear conditions, the commonly used wear-resistant material is high manganese steel. [0003] High manganese steel is divided into 5 grades according to national standards, the main difference is the carbon content, which ranges from 0.75% to 1.45%. High impact and low carbon content. The manganese content is between 11.0% and 14.0%. [0004] The typical high manganese steel is the ZGMn 13-2 high manganese steel specified in GB / T5680-1998, that is, ordinary high manganese steel. The disadvantage is that the yi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/60C22C38/12C22C38/38
Inventor 李卫刘英
Owner JINAN UNIVERSITY
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