| 302HQA钢冷变形过程组织演化分析 |
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| 引用本文： | 张麦仓,董建新,曾燕屏,曾凡.302HQA钢冷变形过程组织演化分析[J].北京科技大学学报,2004,26(2):139-141. |
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| 作者姓名： | 张麦仓 董建新 曾燕屏 曾凡 |
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| 作者单位： | 北京科技大学材料科学与工程学院,北京,100083 |
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| 摘 要： | 通过室温压缩实验,研究了奥氏体不锈钢302HQA的冷变形行为.组织分析和X射线衍射分析表明,冷变形过程产生了形变马氏体.进一步磁性检测表明:随着变形量的增加,形变马氏体的量也增加;在小变形条件下,变形速率对形变马氏体的生成量影响较小;当变形量增加到50%时,随着变形速率的增加,由于变形热效应的影响,形变马氏体含量反而有所下降.
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| 关 键 词： | 302HQA钢 形变马氏体 磁性检测 冷变形 过程组织 演化分析 Forming Process Cold during Stainless Steel Analysis Evolution 马氏体含量 形变马氏体 变形热效应 影响 生成量 变形速率 变形条件 磁性检测 过程产生 分析表 射线衍射 |
| 修稿时间： | 2002年11月7日 |
Microstructure Evolution Analysis of 302HQA Stainless Steel during the Cold Forming Process |
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| ZHANG Maicang,DONG Jianxin,ZENG Yanping,ZENG Fan
Materials Science and Engineering School,University of Science and Technology Beijing,Beijing ,China.Microstructure Evolution Analysis of 302HQA Stainless Steel during the Cold Forming Process[J].Journal of University of Science and Technology Beijing,2004,26(2):139-141. |
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| Authors: | ZHANG Maicang DONG Jianxin ZENG Yanping ZENG Fan
Materials Science and Engineering School University of Science and Technology Beijing Beijing China |
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| Institution: | ZHANG Maicang,DONG Jianxin,ZENG Yanping,ZENG Fan
Materials Science and Engineering School,University of Science and Technology Beijing,Beijing 100083,China |
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| Abstract: | The cold deformation behavior of 302HQA stainless steel was systematically investigated through compress tests at room temperature. By means of microstructure and X-ray diffraction analysis, deformation-induced martensite transformation (DIMT) was found in this alloy during the cold forming process. The result of magnetic measurement shows that the amount of deformation-induced martensite increases with the increasing of plastic strain. When the plastic strain is lower than 30%, the amount of martensite increases with the increasing of strain rate, while the plastic strain is up to 50%, the amount of deformation-induced martensite decreases with the increasing of strain rate due to the effect of deformation-induced heat accumulation. |
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| Keywords: | 302HQA stainless steel deformation martensite magnetic measurement |
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