热处理工艺对52CrMoV4高强度弹簧钢力学性能的影响  

Effect of Heat Treatment Process on the Mechanical Properties of 52CrMoV4 High Strength Spring Steel

作　　者：赵磊 姜超 常志远 张金鑫 李泽 ZHAO Lei;JIANG Chao;CHANG Zhiyuan;ZHANG Jinxin;LI Ze(CITIC Pacific Qingdao Special Steel Co.,Ltd.Qinggang Branch of China Special Steel Institute,Qingdao 266000,China)

机构地区：[1]中信泰富青岛特殊钢铁有限公司中特研究院青钢分院,山东青岛266000

出　　处：《山东冶金》2023年第6期24-25,28,共3页Shandong Metallurgy

摘　　要：通过调控淬火和回火温度对52CrMoV4弹簧钢最佳热处理温度进行研究分析。结果表明,在880℃硬度值达到最高,后随温度上升硬度下降,随着温度上升钢的塑性下降。同时随着回火温度的升高,52CrMoV4弹簧钢中的回火屈氏体增多,导致钢的塑性提高。淬火温度880℃、回火温度380℃时,弹簧钢的力学性能达到最佳,硬度检测值52.1 HRC,屈服强度1722 Mpa,抗拉强度1820 Mpa,断后伸长率10%。By regulating the quenching and tempering temperature of 52CrMoV4 spring steel,the optimum heat treatment temperature was researched and analyzed.The results show that the hardness value reaches its maximum at 880℃and then decreases as the temperature rises and the plasticity of the steel decreases as the temperature rises.At the same time,the tempered troostite in spring steel is increased as rising of the tempering temperature,and resulting in increased plasticity of steel.According to the experimental data,the mechanical properties of spring steel reach the best when quenching temperature is at 880℃and tempering temperature is at 380℃.Rockwell hardness test value is 52.1 HRC,yield strength test value is 1722 MPa,tensile strength test value is 1820 MPa,elongation after break test value is 10%.

关 键 词：52CrMoV4弹簧钢 热处理 中温回火 金相组织 性能 

分 类 号：TG156[金属学及工艺—热处理] TG142.1[金属学及工艺—金属学]