Analysis and modeling of the growth of intermetallic compounds in aluminum-steel joints

doi:10.1039/c7ra06354g

	Analysis and modeling of the growth of intermetallic compounds in aluminum-steel joints
	Zhang, Gang1 ; Chen, ManJiao 1; Shi, Yu1 ; Huang, Jiankang1 ; Yang, Fuqian 2
	2017
发表期刊	RSC Advances
ISSN	2046-2069
卷号	7 期号:60 页码:37797-37805
摘要	In this work, we experimentally and numerically studied the microstructures and growth of intermetallic compounds (IMCs) formed in Al-Fe (aluminum-steel) joints welded by a pulsed double electrode gas metal arc welding (DE-GMAW)-brazing method. The IMCs consist of Fe2Al5 and FeAl3, with Fe2Al5 being the main compound in the joints. The thickness of an IMC layer increases with an increase of the welding current (heat input) into the base metal. EBSD measurement suggests that the preferred crystal orientation of the Fe2Al5 IMC likely provides the necessary path for Al atoms to migrate through the IMC layer for further growth of the Fe2Al5 IMC layer toward the steel substrate. The Monte Carlo method was used to simulate growth of the IMCs in the joints. Numerical results are in good accord with the experimental results, suggesting that Fe2Al5 IMC is first formed in the initial brazing interface between liquid Al and steel substrate, and then the interface between the liquid Al and steel substrate evolves into two new interfaces: one is an interface between the Fe2Al5 IMC layer and the steel substrate, and the other is an interface between the Fe2Al5 IMC layer and liquid Al. During growth of the Fe2Al5 IMC, FeAl3 IMC forms in the interface between the Fe2Al5 IMC layer and the Al and then grows into the Al. The thickness of the Fe2Al5 layer increases nonlinearly with an increase in the growth time. © 2017 The Royal Society of Chemistry.
关键词	Binary alloys Brazing Crystal orientation Gas metal arc welding Gas welding Intermetallics Liquids Monte Carlo methods Phase interfaces
DOI	10.1039/c7ra06354g
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000407305200035
出版者	Royal Society of Chemistry
EI入藏号	20173304049982
EI主题词	Aluminum coated steel
EI分类号	531.1 Metallurgy ; 538.1.1 Soldering ; 538.2.1 Welding Processes ; 541.1 Aluminum ; 801.4 Physical Chemistry ; 922.2 Mathematical Statistics ; 933.1.1 Crystal Lattice
引用统计	被引频次：29[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/151321
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	Shi, Yu; Yang, Fuqian
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China; 2.Univ Kentucky, Dept Chem & Mat Engn, Lexington, KY 40506 USA
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室
第一作者的第一单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	Zhang, Gang,Chen, ManJiao,Shi, Yu,et al. Analysis and modeling of the growth of intermetallic compounds in aluminum-steel joints[J]. RSC Advances,2017,7(60):37797-37805.
APA	Zhang, Gang,Chen, ManJiao,Shi, Yu,Huang, Jiankang,&Yang, Fuqian.(2017).Analysis and modeling of the growth of intermetallic compounds in aluminum-steel joints.RSC Advances,7(60),37797-37805.
MLA	Zhang, Gang,et al."Analysis and modeling of the growth of intermetallic compounds in aluminum-steel joints".RSC Advances 7.60(2017):37797-37805.