廖林镇,杨庚蔚,余驰斌,毛新平,蔡珍,赵刚

• 1:钢铁冶金及资源利用省部共建教育部重点实验室
• 2:武汉钢铁(集团)公司研究院

摘要(Abstract)：

针对CSP工艺生产的30CrMo热轧带钢,研究了淬火温度、保温时间、淬火介质对其组织和力学性能的影响。研究结果表明:淬火温度为860~1000℃,保温时间为5~60 min时,30CrMo钢经水淬和油淬后得到的均为马氏体组织,但不同工艺条件下马氏体的类型、尺寸和力学性能不同。当淬火温度较低时,基体中的马氏体组织由细小的片状马氏体和板条马氏体组成,强度和硬度较高。随着淬火温度的升高以及保温时间的延长,片状马氏体的含量逐渐减少,板条马氏体的含量不断增加,尺寸增大,强度和硬度值下降。其中,试验钢在不同淬火工艺下经油淬后的屈服强度可用σs=-4050.4+16272.2d-1/2来表示,理论计算结果与实验测量结果相吻合。试验钢的最佳淬火工艺为880℃、保温15 min、油淬,其抗拉强度、屈服强度、洛氏硬度、断后伸长率分别为1809 MPa、1206 MPa、52.54 HRC、8.5%。

关键词(KeyWords)： CSP;30CrMo热轧带钢;淬火;马氏体;力学性能

Abstract:

Keywords:

基金项目(Foundation): 中国博士后科学基金(2014M562072)

作者(Author): 廖林镇,杨庚蔚,余驰斌,毛新平,蔡珍,赵刚

DOI: 10.13289/j.issn.1009-6264.2016.07.022

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