Microstructure and Joint Strength of Similar- and Dissimilar Lap Joints Fabricated by Several Advanced Solid-State Welding Methods
Microstructure and Joint Strength of Similar- and Dissimilar Lap Joints Fabricated by Several Advanced Solid-State Welding Methods
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DOI：
10.4028/www.scientific.net/msf.654-656.596
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发表时间：
2010-06
期刊：
影响因子：
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通讯作者：
S. Kumai;Mitsuhiro Watanabe;Keyan Feng
中科院分区：
文献类型：
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作者：
S. Kumai;Mitsuhiro Watanabe;Keyan Feng
采用几种先进的高速固态连接方法，成功地获得了普通熔焊方法难以焊接的同种和异种金属接头。(1)采用金属薄板相互高速斜碰撞的方法，以500 m/s左右的速度对Al/Al、Cu/Cu、Al/Fe（钢）、Al/Cu、Al/Ni、Cu/Ni和Al/大块非晶合金搭接接头进行了磁脉冲焊接。(2)采用特殊设计的放电回路，将2xxx铝合金销与5xxx铝合金板和几种电镀钢板高速螺柱焊接。焊接在几毫秒内完成，在板的背面上没有产生任何焊接痕迹。(3)将6022铝合金板搅拌摩擦点焊到钢板和各种镀锌和镀铝钢板上。焊接在几秒钟内完成。对于这些接头，接头强度和特征接头界面形态进行了研究。
Both similar- and dissimilar metal joints, which are difficult to be welded by using ordinary fusion welding methods, were successfully obtained by using several advanced high-speed solid-state joining methods. (1) Al/Al, Cu/Cu, Al/Fe(Steel), Al/Cu, Al/Ni, Cu/Ni and Al/Bulk metallic glass lap joints were magnetic pulse welded by means of mutual high-speed oblique collision of metal sheets at a high speed of about 500m/s. (2) 2xxx aluminum alloy pins were stud-welded to 5xxx alloy aluminum sheets and several kinds of plated steel sheets at a high speed by using a specially designed discharge circuit. The welding was achieved within a few milliseconds without producing any weld marks on the back surface of the plate. (3) 6022 aluminum alloy sheets were friction stir spot welded to steel sheets and various kinds of galvanized and aluminum-plated steel sheets. The welding was achieved within a few seconds. For those joints, joint strength and characteristic joint interface morphology were investigated.