| 应变速率对TWIP钢Fe-23Mn-2Al-O.2C力学性能的影响 |
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| 引用本文： | 秦小梅,陈礼清,邓伟,邸洪双. 应变速率对TWIP钢Fe-23Mn-2Al-O.2C力学性能的影响[J]. 材料研究学报, 2011, 0(3): 278-282 |
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| 作者姓名： | 秦小梅 陈礼清 邓伟 邸洪双 |
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| 作者单位： | 东北大学轧制技术及连轧自动化国家重点实验室; |
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| 基金项目： | 中央高校基本科研业务费N100507003资助项目~~ |
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| 摘 要： | 开展了固溶处理后TWIP钢Fe-23Mn-2Al-0.2C的拉伸实验,研究了应变速率对其拉伸变形行为的影响.结果表明,当应变速率在2.97×10-4-1.49×10-1s-1范围内变化时,钢的屈服强度没有明显变化,随着应变速率增大,抗拉强度稍有降低,延伸率明显减小.当应变速率较低时,其加工硬化速率随着真应变呈现三个阶段...
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| 关 键 词： | 金属材料 TWIP钢 拉伸变形 应变速率 加工硬化速率 |
Effect of Strain Rate on Mechanical Properties of Fe-23Mn-2Al-0.2C TWIP Steel |
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| QIN Xiaomei CHEN Liqing DENG Wei DI Hongshuang. Effect of Strain Rate on Mechanical Properties of Fe-23Mn-2Al-0.2C TWIP Steel[J]. Chinese Journal of Materials Research, 2011, 0(3): 278-282 |
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| Authors: | QIN Xiaomei CHEN Liqing DENG Wei DI Hongshuang |
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| Affiliation: | QIN Xiaomei CHEN Liqing~(**) DENG Wei DI Hongshuang (State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819) |
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| Abstract: | The effect of strain rate on the mechanical properties has been investigated for a solid-solution treated TWIP steel Fe-23Mn-2AI-0.2C.The results show that the strain rate in the range of 2.97×10-4-1.49×10-1s-1 has no obvious influence on yield strength.However,tensile strength was slightly decreased and elongation evidently decreased as the strain rate was increased.Deformation behavior with three stages was observed as the change of strain hardening rate for low strain rate.While for high strain rate,there exist only two stages in the deformation behavior with respect to the strain hardening rate and true strain.Strain hardening exponent of this steel increases with increasing true strain.High density deformation twins forms during the deformation for different strain rates,and the width of deformation twin lath decreases as the strain rate increases. |
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| Keywords: | metallic materials TWIP steel tensile deformation strain rate strain hardening rate |
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