| HSLA TRIP钢的动态拉伸行为及其模拟 |
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| 引用本文： | 韦习成,谢群,符仁钰,李麟.HSLA TRIP钢的动态拉伸行为及其模拟[J].材料研究学报,2006,20(5):556-560. |
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| 作者姓名： | 韦习成 谢群 符仁钰 李麟 |
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| 作者单位： | 上海大学材料科学与工程学院,上海,200072 |
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| 基金项目： | 上海市教委资助项目;上海市科委资助项目 |
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| 摘 要： | 研究了HSLA TRIP钢的相变诱发塑性，并模拟了其动态流变行为．结果表明，HSLA TRIP钢是应变率敏感的，屈服强度和抗拉强度均随着应变率的提高而增大，断裂延伸率降低．其变形机理是应变率硬化、绝热软化和残余奥氏体的应变诱发相变等因素的综合作用．计及拉伸流变过程中准静态向热激活、热激活向粘性拖曳及热激活和粘性拖曳综合作用和高应变率热软化特性，计算结果与实验具有较好的一致性．在高应变率拉伸变形过程中HSLA TRIP钢的塑性功热转化率为0．8-0．9．
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| 关 键 词： | 金属材料 TRIP钢 应变率 拉伸性能 模拟 |
| 文章编号： | 1005-3093（2006）05-0556-05 |
| 收稿时间： | 2005-10-08 |
| 修稿时间： | 2006-06-01 |
The dynamic tensile behavior of HSLA TRIP steel and its modeling |
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| WEI Xicheng,XIE Qun,FU Renyu,LI Lin.The dynamic tensile behavior of HSLA TRIP steel and its modeling[J].Chinese Journal of Materials Research,2006,20(5):556-560. |
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| Authors: | WEI Xicheng XIE Qun FU Renyu LI Lin |
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| Abstract: | The dynamic tensile behavior of HSLA TRIP steel at room temperature was investigated in the strain rate from 900 s^-1to 1600 s^-1. The results showed that the yield strength and uniform tensile strength increase and total elongation decreases with increasing strain rate. The dynamic deformation mechanism is the combined effects of strain rate hardening, adiabatic temperature rise and deformationinduced transformation of the retained austenite. The flow stress simulated by considering quasi-static, thermally activated and viscous drag flow characteristics as well as strain rate softening effect under high strain rate is in good agreement with the test date. The rate of plastic work translating into heat under high rate deformation is 0.8-0.9 for the HSLA TRIP steel. |
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| Keywords: | metallic materials TRIP steel strain rate tensile property modeling |
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