冯路路,胡锋,鲁修宇

• 1:武汉科技大学高性能钢铁材料及其应用省部共建协同创新中心国际钢铁研究院
• 2:荆楚理工学院机械工程学院
• 3:武汉钢铁(集团)研究院

摘要(Abstract)：

采用激光共聚焦扫描显微镜对07MnCrMoR水电钢奥氏体晶粒长大的动态过程进行了原位观察,并对其静态CCT曲线进行了测定,利用淬火机和热处理炉对38 mm厚的试验钢进行了淬火和回火试验。结果表明:试验钢在1200℃以下加热时奥氏体晶粒长大趋势不明显;当冷却速率为0.05～0.25℃/s时,试验钢的组织转变为多边形铁素体+珠光体,冷却速率为0.5～20℃/s时转变为贝氏体组织,冷却速率为20～50℃/s时转变为马氏体组织;930℃淬火后,试验钢的组织转变为板条贝氏体+马氏体,600℃回火后转变为铁素体+回火贝氏体,大量的碳化物在铁素体基体上析出,其屈服强度为602 MPa,抗拉强度为713 MPa,-20℃低温冲击吸收能量为259 J,力学性能高于国家标准的要求,为最佳的调质生产工艺。

关键词(KeyWords)： 07MnCrMoR;水电钢;淬火;回火;组织性能

Abstract:

Keywords:

基金项目(Foundation): 湖北省教育厅科学技术研究项目(B2019216);; 高压科学与先进超硬复合材料科研团队(TD201906)

作者(Author): 冯路路,胡锋,鲁修宇

DOI: 10.13289/j.issn.1009-6264.2019-0415

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