| 汽车用TWIP钢的力学性能与微观组织 |
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| 引用本文： | 严玲,唐荻,米振莉,郭锦.汽车用TWIP钢的力学性能与微观组织[J].北京科技大学学报,2006,28(8):739-743. |
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| 作者姓名： | 严玲 唐荻 米振莉 郭锦 |
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| 作者单位： | 1. 北京科技大学高效轧制国家工程研究中心,北京,100083;鞍山钢铁集团公司技术中心,鞍山,114001
2. 北京科技大学高效轧制国家工程研究中心,北京,100083 |
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| 摘 要： | 采用热轧、冷轧及退火处理等工艺,对成分为25Mn-3Si-3Al的TWIP钢进行了试制,研究了钢板的力学性能、微观组织及其断裂机制,并采用X射线测定了钢板的晶体学织构.实验结果表明:钢板拉伸时发生典型的延性断裂;拉伸前的组织为伴有大量退火孪晶的奥氏体;在拉伸过程中退火孪晶转变成形变孪晶,使产品的强度和塑性提高;退火过程中形成的织构组分有利于塑性变形.
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| 关 键 词： | TWIP钢 强度 塑性 退火孪晶 形变孪晶 汽车用 力学性能 微观组织 automobiles used TWIP steel microstructure 塑性变形 组分 退火过程 强度 产品 形变孪晶 转变 拉伸过程 奥氏体 退火孪晶 延性断裂 发生 结果 |
| 收稿时间： | 2005-05-19 |
| 修稿时间： | 2006-03-24 |
Properties and microstructure of TWIP steel used in automobiles |
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| YAN Ling,TANG Di,MI Zhenli,GUO Jin.Properties and microstructure of TWIP steel used in automobiles[J].Journal of University of Science and Technology Beijing,2006,28(8):739-743. |
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| Authors: | YAN Ling TANG Di MI Zhenli GUO Jin |
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| Institution: | 1 National Engineering Research Center for Advanced Rolling Technology, University of Science and Technology Beijing, Beijing 100083, Chi na 2 |
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| Abstract: | 25Mn-3Si-3Al TWIP steel sheets were developed by hot rolling,cold rolling and annealing treatment processing. The mechanical properties,microstructure and fracture mechanism of the sheets were investigated and the crystal textures were confirmed by X-ray diffraction measurement. The results show that the fracture mechanism of the sheets is typical toughness fracture under the condition of tensile failure,and the microstructure is austenitic with a large number of annealing twins before tension. During tension the annealing twins change into deformation twins,which make the strength and plasticity of the sheets increase. The textures formed during annealing treatment are advantageous to the plasticity of steel sheets. |
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| Keywords: | TWIP steel strength plasticity annealing twins deformation twins |
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