7075铝合金搅拌摩擦焊构件时效成形回弹率与拉伸性能研究  

Study on Springback and Mechanical Properties of 7075 Aluminum Alloy FSW Component after Aging Forming

作　　者：黎俊初[1] 覃雯[1] 刘大海[1] 黄官伟[1] 

机构地区：[1]南昌航空大学航空制造工程学院,江西南昌330063

出　　处：《热加工工艺》2016年第23期179-181,178,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(51375220);江西省优势科技创新团队资助项目(CB201503100)

摘　　要：本试验对7075合金搅拌摩擦焊焊件与非焊件进行了180℃不同保温时长的时效处理与时效成形处理,并对处理后工件进行了拉伸力学性能测试,研究了工件回弹率、抗拉强度与伸长率变化规律,总结了搅拌摩擦焊工艺对工件时效成形回弹率与拉伸性能影响以及不同热处理工艺对焊件拉伸性能变化的影响。研究发现,焊件回弹率、抗拉强度以及伸长率均低于同等处理工艺非焊件。这对实际生产有着一定的指导意义。The aging treatment and age forming treatment at 180℃ with different holding time were carried out for 7075 alloy FSW weldments and original workpiece, and the mechanical properties were tested. The springback rate, tensile strength and elongation of the workpiece were studied, and the influence of FSW on the springback rate and tensile properties and different heat treatment on the tensile properties component were summarized. The results show that the springback rate, tensile strength and elongation of 7075 alloy FSW weldments are lower than that of the original workpiece. It has a certain guiding significance to the actual production.

关 键 词：7075合金 搅拌摩擦焊 时效成形 回弹 拉伸性能 

分 类 号：TG146.2[一般工业技术—材料科学与工程] TG453[金属学及工艺—金属材料]