Weldability of CMT Joining of AA6061-T6 to Boron Steels with Various Coatings

	Weldability of CMT Joining of AA6061-T6 to Boron Steels with Various Coatings
	Cao, R.1; Sun, J. H.1; Chen, J. H.1; Wang, Pei-Chung 2
刊名	WELDING JOURNAL
	2014-06
卷号	93 期号:6 页码:193S-204S
关键词	AA6061-T6 Boron Steels Coatings Cold Metal Transfer (CMT) Weldability Microstructure Dissimilar Metals
ISSN号	0043-2296
英文摘要	The effect of coatings on the weldability of cold metal transfer (CMT) joining of AA6061-T6 to boron steels was investigated. Samples were fabricated and the weld appearance, microstructure, and composition analyses of the joints were examined using scanning electron microscope (SEM), energy-dispersive spectrometer (EDS), Xray diffraction, and transmission electron microscope (TEM). In addition, the strengths of various joints were evaluated. It was found that molten zinc from a galvanized coating enhanced the molten aluminum filler metal to the wet boron steel substrate, and decreased the heat on the surface of the steel sheet, which made the strength of the joints decrease. The Fe-Zn coating from galvannealed boron steel was not fully molten, and consequently it was of little assistance for,the molten aluminum filler metal to wet the boron steel substrate, leading to poor joint quality. Furthermore, sound CMT weld-braze AA6061-T6 to Al-Si coated boron steel and AA6061-T6 to bare boron steel could not be properly produced due to large formation of brittle FeAl3 intermetallic during the welding process.
资助项目	National Nature Science Foundation of China[51265028]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	AMER WELDING SOC
WOS记录号	WOS:000346329800017
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/34366]
专题	材料科学与工程学院
通讯作者	Cao, R.
作者单位	1.Lanzhou Univ Technol, Lanzhou, Gansu, Peoples R China 2.GM Res & Dev Ctr, Warren, MI USA
推荐引用方式 GB/T 7714	Cao, R.,Sun, J. H.,Chen, J. H.,et al. Weldability of CMT Joining of AA6061-T6 to Boron Steels with Various Coatings[J]. WELDING JOURNAL,2014,93(6):193S-204S.
APA	Cao, R.,Sun, J. H.,Chen, J. H.,&Wang, Pei-Chung.(2014).Weldability of CMT Joining of AA6061-T6 to Boron Steels with Various Coatings.WELDING JOURNAL,93(6),193S-204S.
MLA	Cao, R.,et al."Weldability of CMT Joining of AA6061-T6 to Boron Steels with Various Coatings".WELDING JOURNAL 93.6(2014):193S-204S.