王昊杰,郝浩腾,王昭东,田勇,李勇,李家栋,韩毅

• 1:东北大学轧制技术及连轧自动化国家重点实验室

摘要(Abstract)：

基于真空低压渗碳炉,分析了不同渗碳工艺参数对常见渗碳钢晶粒粗化行为的影响规律,并对实验结果数据进行了处理和线性拟合。结果表明:20钢渗碳温度920℃较为适宜,20Cr钢较适宜的渗碳温度为950℃,20CrMnTi钢在980℃下保温较长时间奥氏体晶粒仍可以保持细小,可以选择较高温度渗碳;20钢、20Cr钢和20CrMnTi钢的奥氏体晶粒长大规律符合Beck关系式;奥氏体晶粒随加热温度的升高呈指数形式长大,温度越高,晶粒生长指数越大。在一定含碳量范围内,随着奥氏体中含碳量的增加,晶粒长大倾向增加;当含碳量超过一定限度后,奥氏体晶粒长大倾向减小;在不同碳浓度下,碳含量对奥氏体晶粒尺寸的影响方式不同。

关键词(KeyWords)： 真空渗碳;工艺参数;渗碳钢;晶粒粗化

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金面上项目(51474064);国家自然科学基金(51234002);; 国家重点研发计划项目(2016YFB0300605);; 中央高校基本科研业务费专项资金资助(N140703002)

作者(Author): 王昊杰,郝浩腾,王昭东,田勇,李勇,李家栋,韩毅

DOI: 10.13289/j.issn.1009-6264.2017.03.028

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