Effects of different initial states on dynamic tensile properties and microstructure of 7075 aluminum alloy

doi:10.1016/j.msea.2023.145939

IMR OpenIR

	Effects of different initial states on dynamic tensile properties and microstructure of 7075 aluminum alloy
	Peng, Wenfei 1,2,4; Gao, Yinghao 1; Li, He 1,2; Lu, Longhui 1; Ma, Kai 3; Lin, Longfei 1,2; Shao, Yiyu 1,2; Shi, Tongya 4
通讯作者	Li, He(lihe@nbu.edu.cn) ; Ma, Kai(kma16s@imr.ac.cn)
	2024
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	891 页码:13
摘要	In the present work, the effects of solution quenching (SQ), under-aging (UA), peak-aging (PA), and over-aging (OA) on the dynamic tensile properties of 7075 aluminum alloy have been systematically studied by Hopkinson tensile bar. The results show that the dynamic deformation behavior of the alloy is remarkably affected by the initial aging state. As the aging time increases, the tensile strength of the material first increases and then decreases. Among them, the alloy in the UA state has the highest tensile strength and strain hardening rate. Besides, the evolution of microstructures such as grains, dislocations and precipitation phases has been quantitatively analyzed by electron backscattered diffraction (EBSD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). It has been found that with the increase of aging time, the grain size gradually becomes refined, the density of geometrically necessary dislocations gradually decreases, and the alloy deformation grain distribution is the most uniform in the UA state. Besides, dynamic stretching promotes the growth of precipitated phases, and a large number of fine eta ' phases are distributed in the matrix in the UA state, and the interaction of the fine eta ' phases with the dislocations greatly improves the strain hardening rate and tensile strength of the material.
关键词	Dynamic tensile property Artificial aging 7075 aluminum alloy Microstructure
资助者	Key Laboratory of Impact and Safety Engineering, Ministry of Education and Part Rolling Key Laboratory of Zhejiang, Ningbo University, Ningbo, China ; National Natural Science Foundation of China ; Ningbo Science and Technology Plan ; Natural Science Foundation of Ningbo ; Guangxi Key Research and Development Plan
DOI	10.1016/j.msea.2023.145939
收录类别	SCI
语种	英语
资助项目	Key Laboratory of Impact and Safety Engineering, Ministry of Education and Part Rolling Key Laboratory of Zhejiang, Ningbo University, Ningbo, China ; National Natural Science Foundation of China[52075272] ; National Natural Science Foundation of China[52205386] ; Ningbo Science and Technology Plan[2021Z099] ; Ningbo Science and Technology Plan[2023Z037] ; Natural Science Foundation of Ningbo[2023J079] ; Guangxi Key Research and Development Plan[AA23023031]
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:001128278700001
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	http://ir.imr.ac.cn/handle/321006/183245
专题	中国科学院金属研究所
通讯作者	Li, He; Ma, Kai
作者单位	1.Ningbo Univ, Zhejiang Prov Key Lab Part Rolling Technol, Ningbo 315211, Peoples R China 2.Ningbo City Collaborat Innovat Ctr New Energy Vehi, Ningbo 315211, Peoples R China 3.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 4.Ningbo Univ, Key Lab Impact & Safety Engn, Minist Educ, Ningbo 315211, Peoples R China
推荐引用方式 GB/T 7714	Peng, Wenfei,Gao, Yinghao,Li, He,et al. Effects of different initial states on dynamic tensile properties and microstructure of 7075 aluminum alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2024,891:13.
APA	Peng, Wenfei.,Gao, Yinghao.,Li, He.,Lu, Longhui.,Ma, Kai.,...&Shi, Tongya.(2024).Effects of different initial states on dynamic tensile properties and microstructure of 7075 aluminum alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,891,13.
MLA	Peng, Wenfei,et al."Effects of different initial states on dynamic tensile properties and microstructure of 7075 aluminum alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 891(2024):13.