Microstructure and Mechanical Properties of Heat Treatment Low-alloy Wear-resistant Steel NM450
The effects of quenching and tempering at different temperatures on the microstructure， strength and wear resistance of NM450 high strength low-alloy wear-resistant steel were studied. The results showed that the lath martensite with a small amount of ferrite structure was obtained for the high-stre...
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Editorial Office of Special Steel
2025-02-01
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| Series: | Teshugang |
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| Online Access: | https://www.specialsteeljournal.com/fileup/1003-8620/PDF/2024-00126.pdf |
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| author | Wu Zhennan, Yao Kaiyang, Tao Yun, Zhou Weichen, WanXin , Song Xinli |
| author_facet | Wu Zhennan, Yao Kaiyang, Tao Yun, Zhou Weichen, WanXin , Song Xinli |
| author_sort | Wu Zhennan, Yao Kaiyang, Tao Yun, Zhou Weichen, WanXin , Song Xinli |
| collection | DOAJ |
| description | The effects of quenching and tempering at different temperatures on the microstructure， strength and wear resistance of NM450 high strength low-alloy wear-resistant steel were studied. The results showed that the lath martensite with a small amount of ferrite structure was obtained for the high-strength low-alloy wear-resistant steel quenched at 840 ℃ and tempered at 200 ℃. The lath martensite was obtained and the martensite matrix contains high-density dislocation， and the residual austenite was distributed between the martensite lath for the steel quenched at 880 ℃-900 ℃ and tempered at 200 ℃.With the increase of quenching temperature， the yield strength of wear-resistan steel NM450（/%：0.20C，0.50Si，2.0Mn，0.20Cr，0.03Als，≤0.015P，≤0.005S）was between 1142 MPa and 1 173 MPa， the tensile strength was between 1 553 MPa and 1 599 MPa， the elongation was between 10.0% and 12.0%. The strengthening mechanism of the test steel was mainly dislocation strengthening and fine grain strengthening and solid solution strengthening. There were a lot of furrows and grinding chips of the steels for abrasive wear， and the wear mechanism was mainly plastic deformation. The strength and wear-resistance proformance was the best for the steel quenched at 880 ℃ and the tempered at 200 ℃. |
| format | Article |
| id | doaj-art-22539e798cf54bfe9e71840d58678d1d |
| institution | Kabale University |
| issn | 1003-8620 |
| language | zho |
| publishDate | 2025-02-01 |
| publisher | Editorial Office of Special Steel |
| record_format | Article |
| series | Teshugang |
| spelling | doaj-art-22539e798cf54bfe9e71840d58678d1d2025-01-20T02:21:39ZzhoEditorial Office of Special SteelTeshugang1003-86202025-02-0146110611010.20057/j.1003-8620.2024-00126Microstructure and Mechanical Properties of Heat Treatment Low-alloy Wear-resistant Steel NM450Wu Zhennan, Yao Kaiyang, Tao Yun, Zhou Weichen, WanXin , Song Xinli0State Key Laboratory of Refractory Materials and Metallurgy， Wuhan University of Science and Technology， Wuhan 430081， ChinaThe effects of quenching and tempering at different temperatures on the microstructure， strength and wear resistance of NM450 high strength low-alloy wear-resistant steel were studied. The results showed that the lath martensite with a small amount of ferrite structure was obtained for the high-strength low-alloy wear-resistant steel quenched at 840 ℃ and tempered at 200 ℃. The lath martensite was obtained and the martensite matrix contains high-density dislocation， and the residual austenite was distributed between the martensite lath for the steel quenched at 880 ℃-900 ℃ and tempered at 200 ℃.With the increase of quenching temperature， the yield strength of wear-resistan steel NM450（/%：0.20C，0.50Si，2.0Mn，0.20Cr，0.03Als，≤0.015P，≤0.005S）was between 1142 MPa and 1 173 MPa， the tensile strength was between 1 553 MPa and 1 599 MPa， the elongation was between 10.0% and 12.0%. The strengthening mechanism of the test steel was mainly dislocation strengthening and fine grain strengthening and solid solution strengthening. There were a lot of furrows and grinding chips of the steels for abrasive wear， and the wear mechanism was mainly plastic deformation. The strength and wear-resistance proformance was the best for the steel quenched at 880 ℃ and the tempered at 200 ℃.https://www.specialsteeljournal.com/fileup/1003-8620/PDF/2024-00126.pdfwear-resistant steel nm 450； microstructure； strength； wear loss |
| spellingShingle | Wu Zhennan, Yao Kaiyang, Tao Yun, Zhou Weichen, WanXin , Song Xinli Microstructure and Mechanical Properties of Heat Treatment Low-alloy Wear-resistant Steel NM450 Teshugang wear-resistant steel nm 450； microstructure； strength； wear loss |
| title | Microstructure and Mechanical Properties of Heat Treatment Low-alloy Wear-resistant Steel NM450 |
| title_full | Microstructure and Mechanical Properties of Heat Treatment Low-alloy Wear-resistant Steel NM450 |
| title_fullStr | Microstructure and Mechanical Properties of Heat Treatment Low-alloy Wear-resistant Steel NM450 |
| title_full_unstemmed | Microstructure and Mechanical Properties of Heat Treatment Low-alloy Wear-resistant Steel NM450 |
| title_short | Microstructure and Mechanical Properties of Heat Treatment Low-alloy Wear-resistant Steel NM450 |
| title_sort | microstructure and mechanical properties of heat treatment low alloy wear resistant steel nm450 |
| topic | wear-resistant steel nm 450； microstructure； strength； wear loss |
| url | https://www.specialsteeljournal.com/fileup/1003-8620/PDF/2024-00126.pdf |
| work_keys_str_mv | AT wuzhennanyaokaiyangtaoyunzhouweichenwanxinsongxinli microstructureandmechanicalpropertiesofheattreatmentlowalloywearresistantsteelnm450 |