ZA12合金氩弧焊HAZ组织模拟及摩擦学性能  

Microstructure simulation and tribological properties of TIG welding HAZ of ZA12 alloy

作　　者：张柯柯[1] 涂益民[1] 陈跃[1] 张永振[1] 陈大柔[1] 薛锦[2] 

机构地区：[1]洛阳工学院材料工程系,洛阳471039 [2]西安交通大学机械工程学院,西安710049

出　　处：《中国有色金属学报》2000年第6期868-871,共4页The Chinese Journal of Nonferrous Metals

基　　金：河南省自然科学基金资助项目!(96 40 416 0 0 )

摘　　要：在对ZA12合金钨极氩弧焊接头HAZ不同部位 (测点 )焊接热循环曲线大量测试和计算基础上 ,借助于焊接热模拟技术 ,设计了进行焊接HAZ显微组织模拟的热循环参数 ,并在DM 10 0 0A型电阻加热式热模拟试验机上 ,实现了ZA12合金钨极氩弧焊焊接HAZ加热峰值温度θm=370℃ ,30 5℃区域 (测点 )显微组织的模拟。研究结果表明 :ZA12合金钨极氩弧焊焊接HAZ组织热模拟试样的耐磨性均高于母材 ,并均随负荷的增加其耐磨性降低。Base on a vast amount of testing and calculations for the welding thermal cycling curves of different testing points in HAZ(heat affected zone) of ZA12 alloy TIG welding joint, the thermal cycle parameters of microstructure stimulation of welding HAZ were designed , and the microstructure simulation of testing points ( θ m is 370 ℃ and 305 ℃) of ZA12 alloy by TIG welding was carried out by the means of type DM 1000A ohmic heating welding thermal simulation tester. The study results from the simulation specimen indicated that the wear resistance of welding HAZ of ZA12 alloy in comparison with that of base metal increases in varying degrees, and with load increasing the wear resistance decreases. The wear resistance of the simulation specimens of welding HAZ was closely related to the form of eutectoid microstructure in α phase. [

关 键 词：ZA12合金 钨极氩弧焊 组织模拟 摩擦学性能 

分 类 号：TG457.19[金属学及工艺—焊接] TG146.13[一般工业技术—材料科学与工程]