| 棘轮和蠕变条件下材料的附加塑性变形行为研究 |
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| 引用本文： | 徐尹杰,蔡力勋.棘轮和蠕变条件下材料的附加塑性变形行为研究[J].航空材料学报,2007,27(6):11-15. |
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| 作者姓名： | 徐尹杰 蔡力勋 |
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| 作者单位： | 1. 西南交通大学,应用力学与工程系,成都,610031;中国测试技术研究院,成都,610021
2. 西南交通大学,应用力学与工程系,成都,610031 |
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| 摘 要： | 针对316L不锈钢进行大量单轴棘轮和蠕变试验研究,对材料在棘轮和蠕变作用下的塑性变形行为以及变形量进行比较和分析.分析发现,材料棘轮和蠕变变形行为之间存在一些相似规律,而且相同试验时间下蠕变变形高于棘轮变形.在持续应力作用下,材料的附加塑性变形与作用应力间体现出上凸的抛物线规律,附加塑性变形先随应力的增长而升高,达到峰值后又逐渐减小.最后,根据这种上凸的抛物线规律提出相应的本构描述方程.
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| 关 键 词： | 棘轮 蠕变 附加塑性变形 316L不锈钢 |
| 文章编号： | 1005-5053(2007)06-0011-05 |
| 修稿时间： | 2006年11月28 |
Research on Additional Plastic Deformation of 316L Stainless Steel under Ratchet and Creep Loading |
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| XU Yin-jie,CAI Li-xun.Research on Additional Plastic Deformation of 316L Stainless Steel under Ratchet and Creep Loading[J].Journal of Aeronautical Materials,2007,27(6):11-15. |
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| Authors: | XU Yin-jie CAI Li-xun |
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| Abstract: | A series of uniaxial experiments for 316L stainless steel were performed under ratchet and creep loading.The material's plastic deformation behavior and the deformation level were analyzed.The research found that the deformation behavior under ratchet and creep loading was somewhat similar;but at identical load time,the deformation caused by creeping was higher than that by ratcheting.Under continual stress loading,the experiment relationship between additional plastic deformation and the stress showed a bulge parabolic pattern.And finally,a constitutive equation to describe this regular pattern was proposed. |
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| Keywords: | ratchet creep additional plastic deformation 316L stainless steel |
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