摘要
以H13模具钢为研究对象,通过硬度和金相分析,研究了热处理工艺优化后的H13模具钢的硬度和显微组织的变化规律。结果表明,经常规球化退火后,H13模具钢的组织由球状珠光体和少量颗粒状碳化物组成,热处理硬度达到HBW 175,加工性能较好。经淬火和二次回火后,H13模具钢的组织更加稳定和均匀,碳化物的偏析现象得到明显改善,碳化物细小,分布均匀,且硬度适中,达HRC46.5,处于最适合使用的硬度区间HRC 44~48,强韧性能良好,有利于提高热作模具钢的使用寿命,满足热作模具钢的性能要求。
Taking H13 die steel as the research object,the characters of hardness and microstructure for H13 die steel were studied after the optimization of heat treatment process through the hardness and metallographic analysis. The results showed that after the conventional spheroidizing annealing of H13 die steel,the microstructure were ball pearlite and small amount of carbide,the hardness reached HBW 175 and had a better processing performance. After quenching and second tempering,the structure of H13 die steel was more stable and uniform,the carbide segregation was dramatically improved. The carbides were fine,well-distributed,and had appropriate hardness HRC 46. 5,which were among the suitable hardness range HRC 44-48 with good toughness and performance. These will be beneficial to the improvement of the service life of the hot working die steel,and can meet the performance requirements of the hot working die steel.
作者
雷家柳
陈跃
徐先锋
赵栋楠
Lei JialiuI ,Chert Yue1,2,Xu Xiartfertg1 ,Zhao Dongnan1(1School of Material Science and Engineering, Hubei Polytechnic University, Huangshi Hubei 435003 ;2Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation, Hubei Polytechnic University, Huangshi Hubei 43500)
出处
《湖北理工学院学报》
2018年第3期31-34,共4页
Journal of Hubei Polytechnic University
基金
湖北理工学院引进人才项目(项目编号:17xjz07R)
湖北省教育厅科学技术研究项目(项目编号:Q20174504)
关键词
H13模具钢
热处理
硬度
显微组织
H13 die steel
heat treatment
hardness
microstructure