王要利,宋克兴,张彦敏,韩文奎,张帅帅

• 1:河南科技大学材料科学与工程学院
• 2:有色金属新材料与先进加工技术省部共建协同创新中心
• 3:河南省有色金属材料科学与加工技术重点实验室

摘要(Abstract)：

采用真空熔炼法制备了不同钛含量的4Cr5MoSiV1热作模具钢,利用洛氏硬度计、扫描电镜(SEM)和透射电镜(TEM)等研究了4Cr5MoSiV1Ti热作模具钢的组织与性能。结果表明:随着钛含量的增加,4Cr5MoSiV1Ti热作模具钢的热稳定性和抗拉强度均先增加后降低。当钛添加量为0.13 mass%时,合金钢具有良好的热稳定性、强度及伸长率和断面收缩率,回火后析出了尺寸约为50 nm的四边形TiC第二相;而当钛添加量为0.54 mass%时,三叉晶界处析出了尺寸为300 nm左右的不规则TiC粒子,这将对合金钢的热稳定性和力学性能产生不良的影响。

关键词(KeyWords)： 钛微合金化;4Cr5MoSiV1Ti;热稳定性;力学性能;显微组织;碳化物

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划(2016YBF0300400);; 河南省高等学校重点科研项目(18A430015)

作者(Author): 王要利,宋克兴,张彦敏,韩文奎,张帅帅

DOI: 10.13289/j.issn.1009-6264.2020-0344

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