摘要
针对防锈铝LF6研究了搅拌摩擦焊焊接规范对焊缝成型及接头力学性能的影响 ,分析了搅拌摩擦焊缺陷产生的原因。结果表明 ,LF6 (M )搅拌摩擦焊接头强度可以达到母材的强度 ,其背弯和正弯角度可达到 180°;焊接规范对接头的力学性能有影响 ,存在一个最佳力学性能规范区 ;某些规范条件下可能出现单边沟槽或隧道型缺陷 ,它们的位置与搅拌头的旋转方向有关。
Friction stir welding(FSW) is a rather new solid-state joining process, usually for joining low melting temperature alloy. The typical LF6 aluminum alloy was joined by using FSW process. The influences of welding conditions on the weld appearance and mechanical properties were investigated. The reasons of forming defect in FSW were analyzed. It is shown that the strength of the joint can reach that of the parent materials, the bending angle can reach 180°. The mechanical properties of the joint are related to the welding variables, and there is a region in which the mechanical properties are higher than 90% of the parent materials. In some welding conditions, some special appearance, such as groove on one side of the weld surface or channel in the weld, may occur, whose position is related to the rotation direction of the pin.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2002年第6期1162-1166,共5页
The Chinese Journal of Nonferrous Metals
基金
江西省自然科学基金资助项目 ( 995 0 0 10 )
关键词
防锈铝
固态塑性连接
搅拌摩擦焊
aluminum alloy
friction stir welding
solid-state joining
