A new method of hybrid friction stir welding assisted by friction surfacing for joining dissimilar Ti/Al alloy
A new method of hybrid friction stir welding assisted by friction surfacing for joining dissimilar Ti/Al alloy
复制标题
摩擦堆焊辅助异种钛/铝合金混合搅拌摩擦焊新方法
DOI：
10.1016/j.matlet.2017.07.081
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发表时间：
2017-11-15
影响因子：
3
通讯作者：
dos Santos, Jorge F.
中科院分区：
文献类型：
--
作者：
Huang, Yongxian;Lv, Zongliang;dos Santos, Jorge F.
为提高钛/铝异种钢的连接效率和避免搅拌摩擦焊焊针磨损，提出了一种摩擦堆焊辅助搅拌摩擦焊（FS-HFSW）新方法。为了拓宽搭接宽度，促进材料流动，设计了头部扩大、端面凹进的搅拌摩擦焊工具。最大拉伸载荷为12.2 kN，为基体铝合金的85.3%，断裂点位于基体铝的热影响区，钛铝界面的良好结合是基于纳米TiAl 3层间金属间化合物层和复杂的机械互锁的综合作用。(C)2017爱思唯尔B. V.保留所有权利。
A new method of friction surfacing assisted hybrid friction stir welding (FS-HFSW) technique was developed to improve the joint efficiency and avoid the pin abrasion for joining of dissimilar Ti/Al joints. The FSW tool with enlarged head and concave end-face was designed to broaden the lap width and promote material flow. The maximum tensile load reached 12.2 kN, representing 85.3% of the parent Al alloy, with a ductile fracture locating at the heat affected zone of base Al. The excellent bonding of Ti and Al was based on the combined effects of nanoscale TiAl3 IMCs layer and complex mechanical inter-locking. (C) 2017 Elsevier B.V. All rights reserved.