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.1,2; Guan, R. G.1,2,3; Wang, Y.2; Misra, R. D. K.4; Yang, B. W.2; Li, Y. D.1; Chen, T. J.1
	2019-03-28
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	751 页码:23-34
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 mu m 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 degrees C and 300 degrees C, 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 degrees C. The tensile strength and elongation of as-cast Al-lFe (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.
关键词	Al-Fe alloy Nanosized Al3Fe phase Heat treatment Spheroidization Mechanical properties
DOI	10.1016/j.msea.2019.02.066
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51674077] ; National Natural Science Foundation of China[51871184]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000463128800004
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：15[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/32027
专题	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
通讯作者	Guan, R. G.; Misra, R. D. K.
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China 2.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Liaoning, Peoples R China 3.Northwestern Polytech Univ, Ctr Adv Lubricat & Seal Mat, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China 4.Univ Texas El Paso, Dept Met & Mat Engn, El Paso, TX 79968 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	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-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,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-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,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-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 751(2019):23-34.