| 组织结构对应变硬化的影响 |
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| 引用本文： | 张旺峰,卢正欣,陈瑜眉,朱金华.组织结构对应变硬化的影响[J].机械工程材料,2002,26(10):7-9,37. |
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| 作者姓名： | 张旺峰 卢正欣 陈瑜眉 朱金华 |
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| 作者单位： | 1. 北京航空材料研究院,北京,100095;西安交通大学金属材料强度国家重点实验室,陕西,西安,710049
2. 西安交通大学金属材料强度国家重点实验室,陕西,西安,710049 |
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| 基金项目： | 国家自然科学基金资助项目 (5 97710 48，5 983 10 3 0 )，国家重点基础研究专项经费资助项目 (G19990 65 0 ) |
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| 摘 要： | 研究了不同类型材料应变硬化的变化特征，结果表明：存在应变诱发马氏体转变的亚稳奥氏体不锈钢、TRIP钢平均硬化率最高，硬化指数随应变的增加呈抛物线型变化；变形后无相变但组织转变为孪晶结构的奥氏体锰钢硬化率次之，硬化指数n随应变量呈线性变化；组织无变化的稳定态材料硬化率最低，n是常数。
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| 关 键 词： | 组织结构 应变硬化 硬化率 硬化指数 应变诱发马氏体 孪晶 |
| 文章编号： | 1000-3738(2002)10-0007-03 |
Effect of Structure on Strain Hardening |
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| ZHANG Wang feng ,LU Zheng xin ,CHEN Yu mei ,ZHU Jin hua.Effect of Structure on Strain Hardening[J].Materials For Mechanical Engineering,2002,26(10):7-9,37. |
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| Authors: | ZHANG Wang feng LU Zheng xin CHEN Yu mei ZHU Jin hua |
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| Affiliation: | ZHANG Wang feng 1,2,LU Zheng xin 2,CHEN Yu mei 2,ZHU Jin hua 2 |
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| Abstract: | Strain hardening behavior for different types of materials has been investigated. The experimental results show that the average hardening rate is high for metastable materials with strain induced martensite transformation, and the hardening exponent varies by parabolic type with increasing strain; the average hardening rate for materials with twin structure after deformation is less than that of the above materials, the hardening exponent increases linearly with increasing strain; the average hardening rate for the materials without changing of structure is the least, the hardening exponent is a constant. |
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| Keywords: | hardening rate hardening exponent strain induced martensite twin |
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