| 18Mn TRIP钢温变形过程中马氏体逆相变行为 |
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| 引用本文： | 鲁法云,杨平,孟利,毛卫民.18Mn TRIP钢温变形过程中马氏体逆相变行为[J].金属学报,2010(10). |
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| 作者姓名： | 鲁法云 杨平 孟利 毛卫民 |
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| 作者单位： | 北京科技大学材料科学与工程学院; |
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| 基金项目： | 国家自然科学基金项目50771019; 高等学校博士学科点专项科研基金项目20090006110013资助~~ |
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| 摘 要： | 通过相变点测定、相图计算、组织观察、XRD分析及EBSD取向成像技术研究了室温下含两种马氏体及奥氏体的18Mn钢在100—500℃间进行温变形时的组织、相结构变化及马氏体逆相变行为.结果表明,在300℃以上压缩变形时,TRIP效应消失,马氏体减少,出现逆相变;形变加速了扩散型逆相变,bcc马氏体或铁素体以扩散方式转变成奥氏体,奥氏体不需要重新形核;形变使奥氏体出现机械稳定化并出现大尺寸的形变孪晶,抑制了随后冷却过程中的马氏体相变;压缩形变时,最后残留的马氏体多出现在{110}和{100}取向的奥氏体晶粒中.bcc马氏体周围难以观察到hcp马氏体.分析认为,hcp马氏体以切变方式逆相变.
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| 关 键 词： | 18Mn钢 温变形 TRIP效应 马氏体逆相变 |
BEHAVIOR OF MARTENSITE REVERSE TRANSFORMATION IN 18Mn TRIP STEEL DURING WARM DEFORMATION |
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| LU Fayun,YANG Ping,MENG Li,MAO Weimin School of Materials Science , Engineering,University of Science , Technology Beijing,Beijing.BEHAVIOR OF MARTENSITE REVERSE TRANSFORMATION IN 18Mn TRIP STEEL DURING WARM DEFORMATION[J].Acta Metallurgica Sinica,2010(10). |
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| Authors: | LU Fayun YANG Ping MENG Li MAO Weimin School of Materials Science Engineering University of Science Technology Beijing Beijing |
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| Affiliation: | LU Fayun,YANG Ping,MENG Li,MAO Weimin School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083 |
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| Abstract: | High manganese steels show significant potential for industrial application due to their remarkable TRIP/TWIP effects at room temperature.The study on the TRIP behavior during warm deformation is important in controlling microstructures and properties of high manganese steels.In this paper,the microstructures,phase structures and reverse transformation of martensites to austenite in a high manganese steel which is composed of two types of martensites and austenite were investigated under warm deformation(10... |
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| Keywords: | 18Mn steel warm deformation TRIP effect reverse transformation of martensite |
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