摘要
基于JMatpro 9.0热力学软件对ZG45Cr5Ni2Mo耐磨钢平衡相组成与连续冷却转变的计算与分析,为该钢设计并实施了如下热处理工艺:900℃油淬,在180、300、400、500和600℃分别进行回火,保温时间为2 h,空冷。通过扫描电镜、洛氏硬度计和冲击试验机对热处理后的试验钢进行微观组织观察和力学性能检测。结果表明,随着回火温度的升高,硬度逐渐下降,冲击吸收能量整体起伏较大。试验钢在300℃回火后硬度为51.9 HRC,冲击吸收能量为48 J,具有较高硬度与良好的韧性配合。
Based on the equilibrium phase composition and CCT curves calculated and analyzed by JMatpro 9.0 thermodynamic software,the ZG45Cr5Ni2Mo wear-resistant steel was oil quenched at 900℃,and tempered for 2 h at 180,300,400,500 and 600℃,respectively,then air cooled.The microstructure and mechanical properties of the heat treated steel were studied by means of scanning electron microscope,Rockwell hardness tester and impact tester.The results show that with the increase of tempering temperature,the hardness decreases gradually,and the impact absorbed energy fluctuates greatly.The hardness of the tested steel tempered at 300℃is 51.9 HRC,and the impact absorbed energy is 48 J,which has a combination of high hardness and good ductility.
作者
樊世冲
孙金钊
申志浩
鲁克锋
刘亚凡
王鸿琪
殷凤仕
Fan Shichong;Sun Jinzhao;Shen Zhihao;Lu Kefeng;Liu Yafan;Wang Hongqi;Yin Fengshi(School of Mechanical Engineering,Shandong University of Technology,Zibo Shandong 255000,China;Sinoma Zibo Heavy Machinery Co.,Ltd.,Zibo Shandong 255000,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2023年第3期57-61,共5页
Heat Treatment of Metals
基金
山东省自然科学基金(ZR20191112010)。
