孙深,李阳,孙萌,张磊,姜周华

• 1:东北大学冶金学院
• 2:东北大学轧制技术及连轧自动化国家重点实验室

摘要(Abstract)：

采用光学显微镜、扫描电镜和力学性能测试等研究了不同含量稀土元素Ce对汽车气门弹簧钢65Si2CrV组织性能的影响。结果表明:当Ce质量分数为0.0039%时,实验钢中的珠光体片层间距最小,淬火、回火组织达到最细,强度和塑性均得到提高,力学性能最好;当Ce的质量分数达到0.0079%时,实验钢的组织开始出现粗化,力学性能下降。因此,适量Ce的添加能够实现显微组织的细化以改善气门弹簧钢的强度和塑性,过量则会导致组织粗化并伴有力学性能的下降。

关键词(KeyWords)： 气门弹簧钢;珠光体;稀土Ce;组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划(2016YFB0300105);; 中央高校基本科研业务费(N172507002);; 沈阳市重大科技成果转化项目(Z17-5-003)

作者(Author): 孙深,李阳,孙萌,张磊,姜周华

DOI: 10.13289/j.issn.1009-6264.2020-0154

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