| 超级贝氏体钢的热处理工艺及性能研究 |
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| 作者姓名： | 张聪 汪淼 胡锋 吴开明 罗迪欧诺娃·伊琳娜 |
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| 作者单位： | 武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北 武汉,430081;武汉科技大学国际钢铁研究院,湖北 武汉,430081,武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北 武汉,430081;武汉科技大学国际钢铁研究院,湖北 武汉,430081,武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北 武汉,430081;武汉科技大学国际钢铁研究院,湖北 武汉,430081,武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北 武汉,430081;武汉科技大学国际钢铁研究院,湖北 武汉,430081,俄罗斯巴尔金中央黑色冶金科学研究院,俄罗斯 莫斯科,105005 |
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| 基金项目： | 湖北省科技支撑计划(对外科技合作类)资助项目(2015BHE00815). |
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| 摘 要： | 本文对比研究了一步、二步等温贝氏体转变及贝氏体转变+碳分配热处理工艺对超级贝氏体钢微观组织与力学性能的影响。结果表明,三种工艺处理后的试验钢组织主要为纳米级贝氏体铁素体及残余奥氏体,且与一步法相比,二步等温贝氏体转变及贝氏体转变+碳分配处理后的超级贝氏体钢组织更为细小,残余奥氏体的体积分数下降,力学性能显著提升,而贝氏体转变+碳分配处理工艺的热处理时间则相对较短。
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| 关 键 词： | 超级贝氏体钢 贝氏体转变 碳分配 显微组织 力学性能 |
| 收稿时间： | 3/7/2016 12:00:00 AM |
Heat treatment processes and properties of super bainitic steels |
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| Authors: | Zhang Cong Wang Miao Hu Feng Wu Kaiming and Rodionova Irina |
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| Institution: | State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China;International Research Institute for Steel Technology, Wuhan University of Science and Technology, Wuhan 430081, China,State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China;International Research Institute for Steel Technology, Wuhan University of Science and Technology, Wuhan 430081, China,State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China;International Research Institute for Steel Technology, Wuhan University of Science and Technology, Wuhan 430081, China,State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China;International Research Institute for Steel Technology, Wuhan University of Science and Technology, Wuhan 430081, China and I.P.Bardin Central Research Institute for Ferrous Metallurgy, Moscow 105005, Russia |
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| Abstract: | In this paper, the effects of heat treatment processes, including one-step and two-step isothermal bainitic transformation as well as bainitic transformation+carbon partitioning, on the microstructures and mechanical properties of super bainitic steels were investigated comparatively. The results show that microstructures of investigated steels after three different heat treatment processes are nanostructured bainitic ferrite and retained austenite. Compared with one-step method, the super bainitic steels treated by two-step isothermal bainitic transformation and bainitic transformation+carbon partitioning techiniques exhibit finer microstructures, lower volume fractions of retained austenite and better mechnical properties, but the bainitic transformation+carbon partitioning method requires shorter heat treatment time. |
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| Keywords: | super bainitic steel bainitic transformation carbon partitioning microstructure mechanical property |
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