陈健,黄飞,丁汉林,朱国辉,陈其伟,程广萍,王子健

• 1:安徽工业大学材料科学与工程学院
• 2:苏州大学沙钢钢铁学院

摘要(Abstract)：

研究了热处理工艺参数对20Mn2Cr钢显微组织和性能的影响规律,并采用扫描电镜、透射电镜、电子背散射衍射技术等研究了不同奥氏体化温度和回火温度下实验钢中的马氏体组织特征和碳化物析出形貌。结果表明,实验钢经900℃奥氏体化处理时可以保证较小的原奥氏体晶粒尺寸及细小的马氏体板条束宽度;550℃再结晶退火可以进一步细化原奥氏体晶粒尺寸及马氏体板条束宽度;淬火后的回火处理有利于Cr碳化物粒子的析出。通过调整热处理工艺,20Mn2Cr钢可以获得1000～1700 MPa级的系列超高强度,同时可以实现超高强度与高塑性的良好匹配。

关键词(KeyWords)： 20Mn2Cr钢;热处理;超高强度;高塑性

Abstract:

Keywords:

基金项目(Foundation): 安徽省科技重大专项(18030901085)

作者(Author): 陈健,黄飞,丁汉林,朱国辉,陈其伟,程广萍,王子健

DOI: 10.13289/j.issn.1009-6264.2021-0029

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