Mechanistic understanding on the evolution of nanosized Al3Fe phase in Al–Fe alloy during heat treatment and its effect on mechanical properties

doi:10.1016/j.msea.2019.02.066

	Mechanistic understanding on the evolution of nanosized Al3Fe phase in Al–Fe alloy during heat treatment and its effect on mechanical properties
	Wang, X.2,3; Guan, R.G.1,2,3; Wang, Y.3; Misra, R.D.K.4; Yang, B.W.3; Li, Y.D.2; Chen, T.J.2
刊名	Materials Science and Engineering A
	2019-03-28
卷号	751 页码:23-34
关键词	Binary alloys Elongation Heat treatment Iron alloys Mechanical properties Morphology Tensile strength Thermodynamic stability Average length Heat treatment temperature Heat treatment time Large surfaces Nanosized Al3Fe phase Rheo- extrusions Spheroidization Strength and elongations
ISSN号	09215093
DOI	10.1016/j.msea.2019.02.066
英文摘要	Al–1Fe (wt%) alloy containing nanosized Al3Fe phase was processed by continuous rheo-extrusion, and subjected to heat treatment at different temperatures. During heat treatment, due to the diffusion of Fe atoms, the nanosized Al3Fe phase was blunted and fragmented along the width direction, and the bluntness and fragmentation resulted in the spheroidization of Al3Fe phase. However, with the extension of heat treatment time, the spheroidized Al3Fe phase became coarse and grew along a particular plane. Then, the morphology of Al3Fe phase transformed into small plate-like. While, the plate-like Al3Fe phase with an average length of 30 µm in the as-cast Al–1Fe (wt%) alloy indicated good thermal stability during heat treatment. The different thermal stability of Al3Fe phases was attributed to their size. The large surface curvature of nanosized Al3Fe phase significantly accelerated the diffusion of Fe atoms. When the heat treatment temperature was 200 and 300 , the tensile strength and elongation of the rheo-extruded Al–Fe alloy marginally decreased. The decrease of tensile strength and the decrease of elongation increased when the heat treatment temperature was greater than 400 . The tensile strength and elongation of as-cast Al–1Fe (wt%) alloy were insignificantly altered. Though the loss of tensile strength of Al–Fe alloy containing nanosized Al3Fe phase was much greater, its tensile strength was always higher than the tensile strength of the as-cast Al–Fe alloy in the entire heat treatment. © 2019 Elsevier B.V.
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000463128800004
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114804]
专题	材料科学与工程学院
作者单位	1.State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, Northwestern Polytechnical University, Xi'an; 710072, China; 2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 3.School of Materials Science and Engineering, Northeastern University, Shenyang; 110819, China; 4.Department of Metallurgical and Materials Engineering, University of Texas at El Paso, 500 W. University Avenue, TX; 79968, United States
推荐引用方式 GB/T 7714	Wang, X.,Guan, R.G.,Wang, Y.,et al. Mechanistic understanding on the evolution of nanosized Al3Fe phase in Al–Fe alloy during heat treatment and its effect on mechanical properties[J]. Materials Science and Engineering A,2019,751:23-34.
APA	Wang, X..,Guan, R.G..,Wang, Y..,Misra, R.D.K..,Yang, B.W..,...&Chen, T.J..(2019).Mechanistic understanding on the evolution of nanosized Al3Fe phase in Al–Fe alloy during heat treatment and its effect on mechanical properties.Materials Science and Engineering A,751,23-34.
MLA	Wang, X.,et al."Mechanistic understanding on the evolution of nanosized Al3Fe phase in Al–Fe alloy during heat treatment and its effect on mechanical properties".Materials Science and Engineering A 751(2019):23-34.