王葛,刘胜强,郭伟,李怀欣,韩大阔,李志广,李强

• 1:燕山大学国家冷轧板带装备及工艺工程技术研究中心
• 2:中信戴卡股份有限公司
• 3:河北工业大学材料科学与工程学院

摘要(Abstract)：

利用光学显微镜(OM)、扫描电镜(SEM)、透射电镜(TEM)、X射线衍射仪(XRD)和力学性能测试等研究了不同Q-P-T热处理工艺对30CrMo钢微观组织和力学性能的影响。在实验研究结果的基础上,给出了一种优化的Q-P-T热处理工艺,即:淬火温度为260℃,配分温度为400℃,配分时间为60 s。结果表明:在优化的Q-P-T热处理工艺下,30CrMo钢中的残留奥氏体最多,残留奥氏体不再以薄膜的形式而是以薄片的形式分布在马氏体之间,且残留奥氏体的体积分数约为9.5%,抗拉强度约为1425 MPa,伸长率约为13.5%,强塑积约为19237 MPa·%,其综合力学性能得到较大幅度提高。

关键词(KeyWords)： 30CrMo钢;Q-P-T工艺;残留奥氏体;强塑积;组织和性能

Abstract:

Keywords:

基金项目(Foundation): 河北省自然科学基金(E2016203119)

作者(Author): 王葛,刘胜强,郭伟,李怀欣,韩大阔,李志广,李强

DOI: 10.13289/j.issn.1009-6264.2019-0365

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