| 1000MPa级DP钢的准静态拉伸行为与应变速率的关系 |
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| 引用本文： | 羊军,胡伟,王武荣,史刚,韦习成.1000MPa级DP钢的准静态拉伸行为与应变速率的关系[J].钢铁研究学报,2011,23(7):39-42. |
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| 作者姓名： | 羊军 胡伟 王武荣 史刚 韦习成 |
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| 作者单位： | 1. 上海汽车集团股份有限公司技术中心,上海,201804
2. 上海大学材料科学与工程学院,上海,200072 |
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| 基金项目： | 国家自然科学基金资助项目(51005144) |
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| 摘 要： | 研究1000MPa的双相钢（DP钢）在室温下的准静态拉伸行为与应变速率（10^-2、10^-1、10^-1s^-1）的关系。结果表明，在准静态拉伸条件下，DP钢的拉伸性能是与应变速率相关的。随着应变速率提高，材料的屈服强度、抗拉强度、屈强比和加工硬化指数明显升高，而均匀伸长率、断裂伸长率略有下降；另外，应变速率对材料的...
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| 关 键 词： | DP钢 准静态拉伸 应变速率 显微组织 |
Relationship Between Strain Rate and Quasi-Static Tensile Behavior of 1000 MPa DP Steel |
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| YANG Jun,HU Wei,WANG Wu-rong,SHI Gang,WEI Xi-cheng.Relationship Between Strain Rate and Quasi-Static Tensile Behavior of 1000 MPa DP Steel[J].Journal of Iron and Steel Research,2011,23(7):39-42. |
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| Authors: | YANG Jun HU Wei WANG Wu-rong SHI Gang WEI Xi-cheng |
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| Affiliation: | YANG Jun1,HU Wei2,WANG Wu-rong2,SHI Gang1,WEI Xi-cheng2(1.Technical Center,SAIC Motor,Shanghai 201804,China,2.School of Materials Science and Engineering,Shanghai University,Shanghai 200072,China) |
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| Abstract: | The relationship between strain rate (10-3, 10-2, 10-1s-1) and quasi-static tensile behavior of 1000MPa DP (Dual Phase) steel was studied at room temperature in the present paper. The results show that the properties of DP steel under quasi-static tension is strain rate dependent. Its yield strength, tensile strength, yield ratio and work hardening exponent increase with increasing strain rates. And uniform elongation, ultimate Elongation slightly decreases. In addition, strain rate dosen′t have distinct influence on strength coefficient. The microsturctural evolution of DP steel and the fracture surfaces with different strain rates were observed using SEM. The tensile deformation behavior was also discussed in order to explain how strain rate influences tensile properties of DP steel. The study can provide experimental support for the application of AHSS in the automobile body. |
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| Keywords: | DP steel quasi-static tension strain rate microstructure |
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