金属热处理 ›› 2023, Vol. 48 ›› Issue (10): 255-259.DOI: 10.13251/j.issn.0254-6051.2023.10.039

• 表面工程 • 上一篇    下一篇

激光淬火工艺参数对Cr12MoV钢组织与性能的影响

冯爱新1,2, 赵剑1,2, 林晋豪1   

  1. 1.温州大学 机电工程学院, 浙江 温州 325035;
    2.温州大学 瑞安研究生院, 浙江 瑞安 325206
  • 收稿日期:2022-08-25 修回日期:2023-08-07 出版日期:2023-10-25 发布日期:2023-12-07
  • 作者简介:冯爱新(1970—),男,博士,教授,博士生导师,主要研究方向为激光加工与质量检测调控技术,E-mail:aixfeng@126.com
  • 基金资助:
    温州市重大科技创新攻关工业项目(ZG2019002)

Effect of laser quenching process parameters on microstructure and properties of Cr12MoV steel

Feng Aixin1,2, Zhao Jian1,2, Lin Jinhao1   

  1. 1. College of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou Zhejiang 325035, China;
    2. Ruian Graduate College of Wenzhou University, Ruian Zhejiang 325206, China
  • Received:2022-08-25 Revised:2023-08-07 Online:2023-10-25 Published:2023-12-07

摘要: 研究了激光淬火对Cr12MoV钢组织及性能的影响规律,分析了不同激光功率(1050、1200、1350 W)及扫描速度(3、4、5 mm/s)对表面激光淬火层的显微组织、硬度及残余压力的影响。结果表明,经激光淬火后Cr12MoV钢的表面硬度提升明显,表面残余应力由拉应力转变为压应力。当激光功率为1200 W,扫描速度4 mm/s时,材料表面宏观形貌平整,微观组织晶粒细化,表面硬度最大(653.68 HV),残余压应力达到-259.29 MPa。

关键词: 激光淬火, Cr12MoV钢, 微观组织, 硬度, 残余应力

Abstract: Effect of laser quenching on microstructure and properties of Cr12MoV steel was studied, and the effects of different laser power (1050, 1200, 1350 W) and scanning speeds (3, 4, 5 mm/s) on microstructure, hardness and residual stresses of the laser quenching surface were analyzed. The results shows that after laser quenching, the surface hardness of the Cr12MoV steel increases obviously, and the surface residual stress changes from tensile stress to compressive stress. When the laser power is 1200 W and the scanning speed is 4 mm/s, the surface macromorphology is flat, the microstructure is refined, the surface microhardness reaches the maximum value of 653.68 HV, and the residual compressive stress reaches -259.29 MPa.

Key words: laser quenching, Cr12MoV steel, microstructure, hardness, residual stress

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