摘要
为提升大截面52CrMoV4弹簧扁钢的塑韧性,对热轧52CrMoV4弹簧扁钢进行了热锻和高温扩散退火,对比测试了热轧、改锻和高温扩散状态扁钢淬火和回火后的冲击性能,并对冲击断口形貌和扁钢微观组织、硬度进行了检测分析。结果表明,与热轧扁钢相比,改锻对于扁钢的组织性能提升效果有限。1220℃高温扩散处理使扁钢成分与组织均匀化,扁钢心部的横向冲击吸收能量提升约45%。
In order to improve the plasticity and toughness of 52CrMoV4 spring flat steel with large section,the hot rolled 52CrMoV4 flat steel was hot forged and high temperature diffused.The impact property of the hot⁃rolled,forged and high temperature diffused flat steel after quenching and tempering was measured,as well as the impact fracture morphology,microstructure and hardness were investigated.The results show that compared with the hot⁃rolled flat steel,the effect of hot forging on improving the microstructure and properties of the flat steel is limited.High temperature diffusion at 1220℃can homogenize the composition and microstructure of the flat steel,the transverse impact absorbed energy at core of the flat steel is increased by about 45%.
作者
闵永安
邵家俊
张文涛
刘超
韩晓丽
Min Yongan;Shao Jiajun;Zhang Wentao;Liu Chao;Han Xiaoli(School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China;Zhejiang Institute of Advanced Materials,Shanghai University,Jiaxing Zhejiang 314113,China;Hebei Yongyang Special Steel Group Co.,Ltd.,Handan Hebei 057150,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2024年第1期126-130,共5页
Heat Treatment of Metals
基金
河北省重大科技成果转化专项(20281009Z)。
关键词
弹簧钢
高温扩散
偏析
冲击性能
spring steel
high temperature diffusion
segregation
impact property
