固溶处理对ZK60合金组织及性能的影响  

Influence of Solution Treatment on Structures and Properties of ZK60 Alloy

作　　者：袁武华[1] 张召春[1] 郭强[1] 夏伟军[1] 吉喆[1] 陈振华[1] 

机构地区：[1]湖南大学材料与科学工程学院,湖南长沙410082

出　　处：《热加工工艺》2006年第2期22-24,共3页Hot Working Technology

基　　金：湖南省科技重大专项计划资助项目(04GK1008-1);湖南省科技厅重点资助项目(03JKY1016)

摘　　要：对铸态及固溶处理后的ZK 60镁合金的组织、拉伸和锻造性能进行了研究,铸态ZK 60镁合金中β相成连续网状分布,力学性能和变形极限较低,经390℃×16h固溶处理后,β相部分或全部溶入基体中,呈不连续点状分布,抗拉强度和屈服强度较铸态提高14%和28%,伸长率(13%)较铸态提高70%。固溶处理后锻造开裂极限达到85%,较铸态提高20%～25%。结果表明,β相的减少使应力集中和裂纹扩展的可能性减小,有效避免了裂纹的产生和传播,明显提高了ZK 60合金的力学性能和加工性能。The microstructure ,tensile and forging properties of magnesium alloy ZK60 after solution treatment were investigated by compared with those of its casting state. The β phase of casting ZK60 alloy states were continuing, and the mechanical properties and deformability were poor.After solution treatment with 390℃× 16h, many parts of the β phase were melted in the matrix, the yield strength and the tensile resistance property were improved compared with its casting state. The forging fracture limit reached to 85%, about 20%～25% higher than that of the casting state. It was evidence improved the mechanical and process properties by lessening the β phase,which reduce the stress concentration and avoid the cracks from creating and propagating.

关 键 词：镁合金 固溶处理 力学性能 锻造 Β相 

分 类 号：TG146.22[一般工业技术—材料科学与工程] TG156.94[金属学及工艺—金属材料]