复合变质处理对铸造热锻模具钢力学性能的影响  

Effect of Compound Modifier on Mechanical Properties of the Cast Hot-Work Die Steel

作　　者：张昆鹏[1] 宋延沛[1] 谢敬佩[1] 李洛利[1] 

机构地区：[1]河南科技大学材料科学与工程系,河南洛阳471003

出　　处：《热加工工艺》2003年第5期22-23,共2页Hot Working Technology

摘　　要：研究了变质处理对铸造热锻模具钢力学性能的影响。结果表明:在相同热处理条件下,经RE和RE-Nb复合变质处理后,其冲击韧性与变质处理前相比分别提高了9.7和14.5J/cm2,常温抗拉强度σb分别提高了82和234MPa,高温抗拉强度分别达到了976和994MPa,而硬度变化不大。The effect of modifier on mechanical properties of the cast cast hotwork die steel was studied.The results showed that under the same conditions of heat treatment,after being modified by RE and compound modified by RENb,the impact toughness of the cast hotwork die steel was increased 12 and 14 J/cm2 repectively than before.And the strength of the steel in normal temperature was increased 82 and 234 MPa respectively than before.And the strength of the steel in high temperature reached 976 and 994MPa respectively.But the hardness of the steel did not change much.

关 键 词：铸造热锻模具钢 复合变质处理 力学性能 

分 类 号：TG113.2[金属学及工艺—物理冶金] TG315.2[金属学及工艺—金属学]