金属热处理 ›› 2023, Vol. 48 ›› Issue (3): 242-247.DOI: 10.13251/j.issn.0254-6051.2023.03.040

• 材料研究 • 上一篇    下一篇

稀土Ce对4Cr5MoSiV1钢组织的影响

杨礼林, 徐祺昊, 赵莉萍   

  1. 内蒙古科技大学 材料与冶金学院, 内蒙古 包头 01401
  • 收稿日期:2022-09-29 修回日期:2022-12-28 出版日期:2023-03-25 发布日期:2023-04-25
  • 作者简介:杨礼林(1981—),男,讲师,博士,主要研究方向为金属材料组织与性能调控,E-mail:yanglilin2018@126.com。
  • 基金资助:
    新型稀土模具钢的研究与开发(201/0902062001);内蒙古科技大学创新基金(2019QDL-B05)

Effect of rare earth Ce on microstructure of 4Cr5MoSiV1 steel

Yang Lilin, Xu Qihao, Zhao Liping   

  1. School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou Inner Mongolia 014010, China
  • Received:2022-09-29 Revised:2022-12-28 Online:2023-03-25 Published:2023-04-25

摘要: 对不同稀土Ce含量的4Cr5MoSiV1试验钢经热加工处理后的显微组织进行了观察和分析,研究Ce含量对其显微组织的影响。结果表明,稀土Ce的加入,使4Cr5MoSiV1钢铸态、锻态、正火和球化退火态的组织得到改善,晶粒细化、夹杂物变性、成分偏析减轻、未溶碳化物消除。但当稀土Ce含量超过0.026%时,上述改善作用逐渐减弱,甚至起到恶化的效果。

关键词: 热作模具钢, 4Cr5MoSiV1钢, 稀土Ce, 显微组织

Abstract: The microstructure of 4Cr5MoSiV1 tested steel with different Ce content after hot-working treatment was observed and analyzed, and the effect of Ce content on its microstructure was studied. The results show that the addition of rare earth Ce can improve the microstructure of the 4Cr5MoSiV1 steel as-cast, and after hot forging, normalizing and spheroidizing annealing, refine the grain, modify the inclusion, reduce the composition segregation and eliminate the undissolved carbide. However, when the content of rare earth Ce exceeds 0.026%, the above improvement effect will gradually weaken and even worsen.

Key words: hot work die steel, 4Cr5MoSiV1 steel, rare earth Ce, microstructure

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