固溶处理对ZW21镁合金组织和性能的影响  

Effects of Solution Treatment on Microstructure and Mechanical Properties of ZW21 Magnesium Alloy

作　　者：张大华[1] 王瑞权[1] 李国全[1] 吴召刚[1] 宋聚海[1] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,甘肃兰州730050

出　　处：《热处理技术与装备》2009年第5期27-31,55,共6页Heat Treatment Technology and Equipment

摘　　要：采用金相显微镜、扫描电镜、X-射线衍射仪及电子万能拉伸试验机等设备研究了固溶处理对ZW 21新型镁合金的显微组织和力学性能的影响。结果表明:该合金经525℃固溶4 h后,合金中的二次相逐渐溶解,使合金组织更加均匀,提高了合金的力学性能。并且经525℃固溶4 h后,合金的抗拉强度达到221 MPa,伸长率达21.5%。The effects of solution treatment on microstructure and mechanical properties of ZW21 magnesium alloy are observed and analyzed by metallographic microscope, scanning electron microscopy （SEM）, X-ray diffraction （XRD） and electronic universal materials testing machine. The results show that the sec ond phase is gradually dissolved after solution treatment at 525℃ for 4 h, the microstructure of alloy is more uniformity ,the mechamcal property of alloy has been improved. In particular the tensile strength and elongation are conspicuous increasing after solution treatment at 525℃ for 4 h, reaching peak values 221 MPa and 21.5%.

关 键 词：ZW21镁合金 固溶处理 显微组织 力学性能 

分 类 号：TG146.22[一般工业技术—材料科学与工程]