Influence of electron-beam superposition welding on intermetallic layer of Cu/Ti joint

被引:19
作者
Chen Guo-qing [1 ]
Zhang Bing-gang [1 ]
Liu Wei [1 ]
Feng Ji-cai [1 ]
机构
[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China
关键词
Cu alloy; Ti alloy; electron beam superposition welding; IMC-layer; TITANIUM-ALLOY; CU; TI;
D O I
10.1016/S1003-6326(11)61479-9
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
QCr0.8 was electron-beam welded to TC4 and the effect of the intermetallic layer (IMC-layer) on the mechanical properties of the joint was investigated. The IMC-layers are joint weaknesses at the Cu fusion line in centered welding and at the Ti fusion line when the beam is deviated towards Cu. A new method referred to as electron-beam superposition welding was presented, and the optimal welding sequence was considered. The IMC-layer produced by centered welding was fragmented and remelted during Cu-side non-centered welding, giving a finely structured compound layer and improved mechanical properties of the joint. The tensile strength of joint is 276.0 MPa, 76.7% that of the base metal.
引用
收藏
页码:2416 / 2420
页数:5
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