Influence of microstructure characteristics on the fatigue properties of 7075 aluminum alloy

doi:10.1016/j.msea.2024.146976

IMR OpenIR

	Influence of microstructure characteristics on the fatigue properties of 7075 aluminum alloy
	Jin, J. W.1; Zhang, Z. J.2,3; Hou, J. P.2; Gong, B. S.2,3; Wang, H. W.2; Zhou, X. H.2; Purcek, G.4; Sheinerman, A. G.5; Zhang, Z. F.2,3
通讯作者	Zhang, Z. J.(zjzhang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
	2024-10-01
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	912 页码:9
摘要	Grain size and aging state are the two major microstructural factors affecting the mechanical properties of Al alloys. In this study, fatigue tests were conducted on 7075 Al alloy with varying grain sizes and aging states. The results indicate that both grain refinement and over aging (OA) treatment are beneficial for enhancing fatigue performance, with the 7075-Min alloy exhibiting the highest fatigue strength of 265.8MPa in the OA state. For grain size, a quantitative positive linear relationship was found between the reciprocal of the square root of the average grain size and the fatigue strength coefficient. Grain refinement optimizes the fatigue performance by increasing the fatigue strength coefficient. Compared to the under aging (UA) state, OA treatment promotes the growth and coarsening of precipitates at grain boundaries (GBs) and within the interior of grains. This change in precipitate morphology effectively facilitates dislocation cross slip, reducing fatigue damage caused by dislocation blocking. The impact of the precipitation-free zone (PFZ) on fatigue performance is negligible compared to that of the precipitates. This study clarifies the relationship between microstructure and fatigue performance, providing valuable insights for microstructure regulation to optimize the fatigue performance of Al alloys.
关键词	7075 aluminum alloy Grain size Aging state Fatigue strength Dislocation annihilation
资助者	National Natural Science Foundation of China (NSFC) ; Youth Innovation Promotion Association CAS ; IMR Innovation Fund ; Chinese Academy of Sciences (CAS) ; Scientific Research Instrument and Equipment Development Project of CAS ; Scientific and Technological Research Council of Turkey (TUBITAK)
DOI	10.1016/j.msea.2024.146976
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)[52271121] ; National Natural Science Foundation of China (NSFC)[52322105] ; National Natural Science Foundation of China (NSFC)[52321001] ; National Natural Science Foundation of China (NSFC)[52130002] ; Youth Innovation Promotion Association CAS[2021192] ; IMR Innovation Fund[2023-ZD01] ; IMR Innovation Fund[2024-PY08] ; Chinese Academy of Sciences (CAS)[174321KYSB20210002] ; Scientific Research Instrument and Equipment Development Project of CAS[YJKYYQ20210011] ; Scientific and Technological Research Council of Turkey (TUBITAK)[121N772]
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:001281423400001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：5[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/321006/188584
专题	中国科学院金属研究所
通讯作者	Zhang, Z. J.; Zhang, Z. F.
作者单位	1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 4.Karadeniz Tech Univ, Dept Mech Engn, TR-61080 Trabzon, Turkiye 5.Russian Acad Sci, Inst Problems Mech Engn, St Petersburg 199178, Russia
推荐引用方式 GB/T 7714	Jin, J. W.,Zhang, Z. J.,Hou, J. P.,et al. Influence of microstructure characteristics on the fatigue properties of 7075 aluminum alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2024,912:9.
APA	Jin, J. W..,Zhang, Z. J..,Hou, J. P..,Gong, B. S..,Wang, H. W..,...&Zhang, Z. F..(2024).Influence of microstructure characteristics on the fatigue properties of 7075 aluminum alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,912,9.
MLA	Jin, J. W.,et al."Influence of microstructure characteristics on the fatigue properties of 7075 aluminum alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 912(2024):9.