稀土元素对HYMA模具钢组织和性能的影响  

Effect of Rare Earth Elements on HYMA Die Steel Microstructure and Properties

作　　者：徐先锋 张玉成 陶学军 XU Xianfeng;ZHANG Yucheng;TAO Xuejun(School of Materials Science and Engineering,Hubei Polytechnic University,Huangshi Hubei 435003;College of Chemical and Biological Engineering,Zhejiang University,Hangzhou Zhejiang 310027;Hubei Haoyun New Material Technology Co.,Ltd.,Huangshi Hubei 435000)

机构地区：[1]湖北理工学院材料科学与工程学院,湖北黄石435003 [2]浙江大学化学工程与生物工程学院,浙江杭州310027 [3]湖北浩运新材料科技有限公司,湖北黄石435000

出　　处：《湖北理工学院学报》2024年第5期25-29,共5页Journal of Hubei Polytechnic University

基　　金：湖北省科技厅科技创新专项资金资助(项目编号:2021BLB207);湖北理工学院科研项目(项目编号:17xjz09R)。

摘　　要：在HYMA模具钢中添加稀土元素,通过实验测定、金相观察和理论分析研究了稀土元素在HYMA模具钢中的存在状态和变化规律,及其对HYMA模具钢组织和性能的影响。研究结果表明:稀土元素在HYMA模具钢中可以起到脱硫、除磷的作用。添加适量的稀土后,HYMA模具钢的退火、淬火态组织都能得到明显改善,晶粒细化,碳化物细小而弥散,净化了基体,同时析出高硬度、弥散分布的第二相金属间化合物,使HYMA模具钢的硬度升高,且淬火态硬度值上升幅度较大。This experiment investigates the effect of rare earth elements on the microstructure and properties of HYMA mold steel by adding them to the steel.The research results indicate that rare earths can play a role in desulfurization and phosphorus removal in HYMA mold steel.By adding an appropriate amount of rare earths,the annealed and quenched microstructure of HYMA mold steel can be significantly improved,with grain refinement and fine and dispersed carbides formation.After adding rare earth elements,the matrix was purified,and high hardness,dispersed second phase intermetallic compounds were precipitated.The hardness of the mold steel increased,and the hardness value of the quenched state increased significantly.

关 键 词：HYMA模具钢 稀土元素 组织结构 性能 

分 类 号：TB31[一般工业技术—材料科学与工程]