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

CORC > 兰州理工大学 > 兰州理工大学

	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
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2019-03-28
卷号	751 页码:23-34
关键词	Al-Fe alloy Nanosized Al3Fe phase Heat treatment Spheroidization Mechanical properties
ISSN号	0921-5093
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 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.
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
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000463128800004
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/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
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.