Cold metal transfer joining of aluminum AA6061-T6-to-galvanized boron steel

doi:10.1115/1.4028012

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	Cold metal transfer joining of aluminum AA6061-T6-to-galvanized boron steel
	Cao, R.2; Sun, J. H.2; Chen, J. H.2; Wang, Pei-Chung 1
刊名	Journal of Manufacturing Science and Engineering, Transactions of the ASME
	2014-10-01
卷号	136 期号:5
关键词	Accidents After-heat treatment Automobiles Automotive industry Brazing Filler metals Forging machines Galvanized metal High strength alloys High strength steel Hot stamping Joining Light weight vehicles Metals Scanning electron microscopy Stamping Weldability Welding Welds X ray spectrometers AA6061-T6 Automotive applications Boron steels Cold metal transfers Energy dispersive x-ray spectrometers Heat treatment process High specific strength Static strength
ISSN号	10871357
DOI	10.1115/1.4028012
英文摘要	Along with the development of automobile industry for lightweight vehicles, more and more advanced and ultrahigh strength steels (e.g., hot stamping steel) have been used for automotive applications. Making use of the high strength steels not only reduces the vehicle weight and air emissions but also improves crash safety. Meanwhile, aluminum alloys are one of the lightest structural materials, and they have been widely used in automotive industry due to their many attractive properties such as low density, high specific strength along with good damping capacity. Since both hot stamping steel and aluminum alloys are being widely used for automotive applications, joining of hot stamping steel to aluminum alloys is inevitable. In this study, the feasibility of joining aluminum alloy AA6061-T6 to galvanized boron steel by cold metal transfer (CMT) method using AA4043 filler metal was investigated. The microstructures and chemical compositions of the welded lap joints were examined using scanning electron microscope (SEM) and energy dispersive X-ray spectrometer (EDS), while the static strengths of the joints were measured. Test results showed that a sound weld-brazed joint which consisted of rich zinc zone, reaction interface zone, weld metal zone and fusion zone was formed. The phases and thickness of the reaction layers were analyzed and identified. In addition, the strength of CMT weld-brazed aluminum AA6061-T6 to galvanized boron steel depends on the torch deviation (i.e., distance between the welding torch and the edge of the weld seam). The joints fabricated with a deviation distance of 2 mm had greater strength than that of the joints made a deviation distance of 0 mm. Finally, the effect of temperature exposure of hot stamping on the weldability of CMT joining of joining aluminum AA6061-T6 to galvanized boron steel was investigated. It was found that the surface of galvanized boron steel was severely oxidized after heat treatment process and consequently reduced the weldability in CMT joining AA6061-T6 and galvanized boron steel. © 2014 by ASME.
资助项目	National Nature Science Foundation of China[51265028]
WOS研究方向	Engineering
语种	英语
出版者	American Society of Mechanical Engineers (ASME)
WOS记录号	WOS:000341978200016
状态	已发表
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113575]
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院
通讯作者	Cao, R.
作者单位	1.Gen Motors Global Res & Dev Ctr, Mfg Syst Res Lab, Warren, MI 48090 USA 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Cao, R.,Sun, J. H.,Chen, J. H.,et al. Cold metal transfer joining of aluminum AA6061-T6-to-galvanized boron steel[J]. Journal of Manufacturing Science and Engineering, Transactions of the ASME,2014,136(5).
APA	Cao, R.,Sun, J. H.,Chen, J. H.,&Wang, Pei-Chung.(2014).Cold metal transfer joining of aluminum AA6061-T6-to-galvanized boron steel.Journal of Manufacturing Science and Engineering, Transactions of the ASME,136(5).
MLA	Cao, R.,et al."Cold metal transfer joining of aluminum AA6061-T6-to-galvanized boron steel".Journal of Manufacturing Science and Engineering, Transactions of the ASME 136.5(2014).