Microstructure and properties of Ti6Al4V-T2 lap welded joints by cold metal transfer technology

doi:10.3901/JME.2014.16.135

	Microstructure and properties of Ti6Al4V-T2 lap welded joints by cold metal transfer technology
	Feng, Zhen; Cao, Rui; Chen, Jianhong
刊名	Jixie Gongcheng Xuebao/Journal of Mechanical Engineering
	2014-08-20
卷号	50 期号:16 页码:135-139
关键词	Aluminum alloys Binary alloys Copper alloys Dissimilar metals Heat affected zone Intermetallics Metals Microstructure Scanning electron microscopy Soldered joints Spectrometers Ternary alloys Titanium sheet Welding Wire Cold metal transfers Energy dispersive spectrometers Microstructure and properties Pure copper Tensile shear strength Tensile shear test Titanium alloy Ti6Al4V Welding technology
ISSN号	05776686
DOI	10.3901/JME.2014.16.135
英文摘要	The lap-shear joint configuration that the titanium alloy Ti6Al4V sheet is placed on the top of the pure copper T2 sheet is carried out. 1 mm thick titanium alloy Ti6Al4V is joined to 1 mm thick pure copper T2 using ERCuNiAl filler wire by cold metal transfer (CMT) welding technology. Microstructure and intermetallic compounds of the welded joints are examined by scanning electron microscopy (SEM) with energy dispersive spectrometer (EDS). The mechanical properties are characterized by tensile-shear tests. Results indicate that the welding process is stable and the continuous and uniform welded joint is formed. Satisfied lapped joint between titanium alloy Ti6Al4V and pure copper T2 can be achieved by CMT welding method. Copper sheet and welding wire are melted, and then copper-weld interface is formed. Titanium sheet is partially melted, copper sheet and welding wire melting is surrounded around titanium sheet, so three titanium-weld interfaces are formed. Ti-Cu welded interface is composed of an intermetallic compounds layer of TiCu, TiAl, Ti2Cu, AlCu2Ti and copper base solid solution. The joint has tensile shear strength of 200 MPa, and fractures with plastic fracture mode in the copper heat affected zone (HAZ). ©2014 Journal of Mechanical Engineering
语种	中文
出版者	Editorial Office of Chinese Journal of Mechanical Engineering
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/112731]
专题	材料科学与工程学院
作者单位	State Key Laboratory of Gansu Advance Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Feng, Zhen,Cao, Rui,Chen, Jianhong. Microstructure and properties of Ti6Al4V-T2 lap welded joints by cold metal transfer technology[J]. Jixie Gongcheng Xuebao/Journal of Mechanical Engineering,2014,50(16):135-139.
APA	Feng, Zhen,Cao, Rui,&Chen, Jianhong.(2014).Microstructure and properties of Ti6Al4V-T2 lap welded joints by cold metal transfer technology.Jixie Gongcheng Xuebao/Journal of Mechanical Engineering,50(16),135-139.
MLA	Feng, Zhen,et al."Microstructure and properties of Ti6Al4V-T2 lap welded joints by cold metal transfer technology".Jixie Gongcheng Xuebao/Journal of Mechanical Engineering 50.16(2014):135-139.