周丽娜,唐光泽,马欣新,吴廷宝,马芳,赵开礼

• 1:哈尔滨工业大学先进焊接与连接国家重点实验室
• 2:哈尔滨工业大学材料科学与工程学院
• 3:中国航空工业集团公司中航工业哈尔滨轴承有限公司

摘要(Abstract)：

利用电解分离萃取、光学显微镜以及X射线衍射等方法分析了奥氏体化温度对M50钢碳化物溶解、晶粒尺寸以及残留奥氏体含量等组织转变的影响。结果表明,当奥氏体化温度为1000℃时,M_(23)C_6已经全部溶解,而M_6C也已于1100℃下完全溶解,继续升高奥氏体化温度,剩余碳化物类型不再发生变化;当奥氏体化温度为1120℃时,出现个别晶粒长大现象,而温度达1140℃时,平均晶粒直径达37μm,晶粒度已经达6.5级;随奥氏体化温度的升高残留奥氏体含量逐渐增加,当奥氏体化温度为1200℃时,残留奥氏体含量达30%。

关键词(KeyWords)： 奥氏体化温度;碳化物;残留奥氏体

Abstract:

Keywords:

基金项目(Foundation): 国家高技术研究发展(“863”项目)计划(2015AA034303)

作者(Author): 周丽娜,唐光泽,马欣新,吴廷宝,马芳,赵开礼

DOI: 10.13289/j.issn.1009-6264.2016.07.014

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