| 高强高韧低合金锰钢的研制 |
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| 引用本文： | 赵艳君, 许立伟, 阎良萍, 孟庆雪, 任学平. 高强高韧低合金锰钢的研制[J]. 工程科学学报, 2010, 32(2): 196-200,206. DOI: 10.13374/j.issn1001-053x.2010.02.021 |
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| 作者姓名： | 赵艳君 许立伟 阎良萍 孟庆雪 任学平 |
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| 作者单位： | 北京科技大学材料科学与工程学院,北京,100083;广西大学材料科学与工程学院,南宁,530004;太原钢铁,集团,有限公司,太原,030003;北京科技大学材料科学与工程学院,北京,100083 |
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| 摘 要： | 采用多元合金化思路设计了一种新型低合金高强度高韧性锰钢.研究了该钢的静态CCT曲线、显微组织、断口形貌以及热处理工艺对钢的力学性能的影响.结果表明:该钢中过冷奥氏体的稳定性高,具有高淬透性及高回火稳定性,经890～930℃淬火及200～230℃回火后获得回火板条马氏体组织,使该钢具有高的强韧性(抗拉强度Rm≥1500MPa,冲击韧性Akv≥85J)匹配;钢中适当提高锰含量,符合我国资源情况,具有较高的性价比.
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| 关 键 词： | 高强度低合金钢 锰钢 力学性能 热处理 |
| 收稿时间： | 2009-06-18 |
Preparation of a high-strength and high-toughness low-alloy Mn steel |
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| ZHAO Yan-jun, XU Li-wei, YAN Liang-ping, MENG Qing-xue, REN Xue-ping. Preparation of a high-strength and high-toughness low-alloy Mn steel[J]. Chinese Journal of Engineering, 2010, 32(2): 196-200,206. DOI: 10.13374/j.issn1001-053x.2010.02.021 |
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| Authors: | ZHAO Yan-jun XU Li-wei YAN Liang-ping MENG Qing-xue REN Xue-ping |
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| Abstract: | A new type of high-strength and high-toughness low-alloy Mn steel was designed by multi-element alloying.The static CCT diagram,microstructure,fracture morphology of the steel,as well as the effect of heat treatment on its mechanical properties,were studied.The results show that the stability of under-cooled austenite in the steel is excellent,which makes the steel have high hardenability and tempering stability.After being quenched at 890 to 930℃ and tempered at 200 to 230℃,the steel obtains tempered lath martensite which makes the steel the optimum combination of tensile strength Rm and impact toughness Akv (Rm ≥ 1 500 MPa,Akv ≥ 85 J).A good performance-price ratio was determined by properly increasing the content of Mn which is abundant in China. |
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| Keywords: | high-strength low-alloy steel Mn steel mechanical properties heat treatment |
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