The Growth Behavior for Intermetallic Compounds at the Interface of Aluminum-Steel Weld Joint

doi:10.3390/ma15103563

	The Growth Behavior for Intermetallic Compounds at the Interface of Aluminum-Steel Weld Joint
	Yu, Xiaoquan 1; Huang, Jiankang 2; Yang, Tao 2; Fan, Ding 1
刊名	MATERIALS
	2022-05-01
卷号	15 期号:10
关键词	Al-Fe intermetallic compounds growth kinetics aluminum-steel weld joint numerical simulation
DOI	10.3390/ma15103563
英文摘要	In this work, the microstructure and growth behavior of Al-Fe intermetallic compounds (IMCs), which formed at interface of weld steel-aluminum joint, are successfully analyzed via the combination of experiment and physical model. A layer IMCs consists of Fe2Al5 and Fe4Al13, in which the Fe2Al5 is the main compound in the layer. The IMCs layer thickness increases with the increase of the heat input and the maximum thickness of IMCs layer is 22 +/- 2 mu m. The high vacancy concentration of Fe2Al5 IMCs provides the diffusion path for Al atoms to migrate through the IMCs layer for growing towards to steel substrate. By using the calculated temperature profiles as inputs, the combined 2D cellular automata (CA)-Monte Carlo (MC) model is applied to simulate the grain distribution and interfacial morphology evolution at the Al-steel interface. This 2D model simulates the IMCs nucleation, growth, and solute redistribution. The numerical results are in good agreement with the experimental results, suggesting that the growth process can be divided four stages, and the thickness of the Fe2Al5 layer increases nonlinearly with the increase of the growth time. The whole nucleation and growth process experienced 1.7-2 s, and the fastest growth rate is 8 mu m/s. The addition of Si element will influence diffusion path of Al atom to form different interface morphology. The effects of peak temperature, cooling time, and the thermal gradient on the IMCs thickness are discussed. It shows that the peak temperature has the major influence on the IMCs thickness.
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
语种	英语
出版者	MDPI
WOS记录号	WOS:000803507800001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158640]
专题	材料科学与工程学院
作者单位	1.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China; 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	Yu, Xiaoquan,Huang, Jiankang,Yang, Tao,et al. The Growth Behavior for Intermetallic Compounds at the Interface of Aluminum-Steel Weld Joint[J]. MATERIALS,2022,15(10).
APA	Yu, Xiaoquan,Huang, Jiankang,Yang, Tao,&Fan, Ding.(2022).The Growth Behavior for Intermetallic Compounds at the Interface of Aluminum-Steel Weld Joint.MATERIALS,15(10).
MLA	Yu, Xiaoquan,et al."The Growth Behavior for Intermetallic Compounds at the Interface of Aluminum-Steel Weld Joint".MATERIALS 15.10(2022).