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| 高锰奥氏体TRIP/TWIP钢的组织和力学性能 | |
| 引用本文： | 李卫,唐正友,王玫,丁桦,杨平. 高锰奥氏体TRIP/TWIP钢的组织和力学性能[J]. 钢铁, 2007, 42(1): 71-75 |
| 作者姓名： | 李卫 唐正友 王玫 丁桦 杨平 |
| 作者单位： | 1. 东北大学材料与冶金学院,辽宁,沈阳,110004 2. 钢铁研究总院连铸中心,北京,100081 3. 北京科技大学材料科学与工程学院,北京,100083 |
| 摘 要： | 研究了两种不同锰含量的高锰奥氏体钢在室温拉伸变形过程中力学性能和组织的变化.结果表明,随着钢中锰含量的变化,实验钢在流变应力的作用下出现相变诱导塑性的TRIP效应和孪晶诱导塑性的TWIP效应.在1×10-3 s-1的初始应变速率条件下,锰的质量分数为23.8%的实验钢可达到666 MPa的抗拉强度和67%的伸长率,而锰的质量分数为33%的实验钢可达到540 MPa的抗拉强度和97%的伸长率.并且在10-3～10-1 s-1的初始应变速率范围内,实验钢的抗拉强度对于流变应力不敏感,而实验钢的塑性则表现出一定的应变速率敏感性.由于该钢具有较好的综合力学性能,有望作为新一代高强度、高塑性汽车用钢. |
| 关 键 词： | 高锰奥氏体钢 TRIP效应 TWIP效应 应变速率敏感性 汽车用钢 |
| 文章编号： | 0449-749X（2007）01-0071-05 |
| 修稿时间： | 2006-03-08 |
Microstructure and Mechanical Properties of High Manganese Austenite TRIP/TWIP Steels |
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| LI Wei,TANG Zheng-you,WANG Mei,DING Hua,YANG Ping. Microstructure and Mechanical Properties of High Manganese Austenite TRIP/TWIP Steels[J]. Iron & Steel, 2007, 42(1): 71-75 | |
| Authors: | LI Wei TANG Zheng-you WANG Mei DING Hua YANG Ping |
| Affiliation: | 1. School of Materials and Metallurgy of Northeastern University,Shenyang 110004, Liaoning, China; 2. Continuous Foundry Center of Central Iron and Steel Research Institute, Beijing 100081, China; School of Materials Science and Engineering of University of Science and Technology Beijing, Beijing 100083, China |
| Abstract: | The microstructure and mechanical properties of two high manganese austenite steels during tensile tests at room-temperature were studied.The results indicate that the steels exhibit transformation induced plasticity(TRIP) and twinning induced plasticity(TWIP) under flow stress.At the initial strain rate of 10~(-3) s~(-1),the tensile strengths of 23.8% Mn and 33% Mn samples were 666 MPa and 540 MPa and their elongations were 67% and 97% respectively.In the range of initial strain rate of 10~(-3)-10~(-1) s~(-1),nearly no strain rate sensitivity to flow stress in tensile test was observed,but such sensitivity was observed in plasticity.The steel,can be taken as the new generation high-strength and high-plasticity automobile steel due to the better integrated mechanical properties. |
| Keywords: | high manganese austenite steel TRIP TWIP strain rate sensitivity automobile steel |
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