| 马氏体—奥氏体双相热模具钢中的马氏体相变 |
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| 引用本文： | 谢长生,赵建生,梁夏,孙培祯.马氏体—奥氏体双相热模具钢中的马氏体相变[J].材料热处理学报,1994(2). |
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| 作者姓名： | 谢长生 赵建生 梁夏 孙培祯 |
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| 作者单位： | 华中理工大学 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 利用全自动相变仪和Ｘ射线衍射仪，对一种含Ｍｎ－Ｎｉ双相热模具钢的马氏体相变特征，以及淬火加热温度、中温等温和二次加热对马氏体相变的影响进行了研究。结果表明，马氏体转变体积分数ｆ＿ｍ随淬火加热温度的升高而减少，Ｍ＿ｓ点却随温度的升高呈现出先降后升的变化趋势。在中温区等温和经二次加热处理，由于碳化物的析出，可增大ｆ＿ｍ和提高Ｍ＿ｓ点。
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| 关 键 词： | 马氏体相变，双相组织，热模具钢 |
MARTENSITIC TRANSFORMATION IN A MARTENSITE-AUSTENITE DUAL-PHASE HOT DIE STEEL |
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| Xie Changsheng,Zhao Jiansheng,Liang Xia,Sun Peizhen.MARTENSITIC TRANSFORMATION IN A MARTENSITE-AUSTENITE DUAL-PHASE HOT DIE STEEL[J].Transactions of Materials and Heat Treatment,1994(2). |
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| Authors: | Xie Changsheng Zhao Jiansheng Liang Xia Sun Peizhen |
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| Affiliation: | Huazhong University of Science and Technology |
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| Abstract: | The characteristic of martensitic transformation of a dual-phase hot die steel containing nickel and manganese has been investigated by fully automatic transformation dilatometer and X-ray diffractometer.The effects of austenitizing temperature,isothermal treatment in medium temperature range and secondary heating on the transformation have also been studied. The results show that volume fraction (f_m)of martensite transformed decrease with increasing austenitizing temperature,however,M_S first decreases and then increases with increasing the temperature. It is Because the carbides precipitation during isothermal treatment and secondary heat treatment would increase both f_m and M_S. |
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| Keywords: | martensitic transformation dual-phase microstructure hot die steel |
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