Improving the fatigue strength of A7N01 aluminum alloy by adjusting Si content

doi:10.1016/j.msea.2018.10.085

CORC > 金属研究所 > 中国科学院金属研究所

	Improving the fatigue strength of A7N01 aluminum alloy by adjusting Si content
	Gong, B. S.2,3; Liu, Z. J.2; Wang, Y. L.1; Zhang, Z. J.3; Zhang, P.3; Jiang, H. C.1; Rong, L. J.1; Zhang, Z. F.3
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2019-01-10
卷号	742 页码:15-22
关键词	A7N01 aluminum alloy Si content Fatigue strength Microstructure homogeneity
ISSN号	0921-5093
DOI	10.1016/j.msea.2018.10.085
通讯作者	Zhang, Z. J.(zjzhang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
英文摘要	As high-strength aluminum alloy for traction beam of high-speed rail, the fatigue strength of A7N01 aluminum alloy is particularly critical for its industrial application. In order to improve the fatigue strength of this aluminum alloy, three kinds of A7N01 aluminum alloy with different Si content were selected. The result indicates that, with the increase of Si element content, the fatigue strength is enhanced monotonously and meanwhile the dispersivity of S-N curves is largely reduced. Analyses of microstructure and the error of strength and hardness all indicate that the microstructure homogeneity of the alloy is improved when increasing the Si content, which is proved to be the main reason for the enhanced fatigue strength and reduced fatigue life dispersivity. Besides, it is found that the discontinuous distribution of the grain boundary precipitates due to the increase of Si content also contributes to the improved fatigue property.
资助项目	National Natural Science Foundation of China (NSFC)[51790482] ; National Natural Science Foundation of China (NSFC)[51331007] ; National Natural Science Foundation of China (NSFC)[51401207] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22020202]
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:000457814400002
资助机构	National Natural Science Foundation of China (NSFC) ; Strategic Priority Research Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/131779]
专题	金属研究所_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.Chinese Acad Sci, CAS Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Shenyang Univ Technol, Sch Mat Sci & Engn, 111 Shenliao Rd, Shenyang 110870, Liaoning, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Mat Fatigue & Fracture Div, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Gong, B. S.,Liu, Z. J.,Wang, Y. L.,et al. Improving the fatigue strength of A7N01 aluminum alloy by adjusting Si content[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,742:15-22.
APA	Gong, B. S..,Liu, Z. J..,Wang, Y. L..,Zhang, Z. J..,Zhang, P..,...&Zhang, Z. F..(2019).Improving the fatigue strength of A7N01 aluminum alloy by adjusting Si content.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,742,15-22.
MLA	Gong, B. S.,et al."Improving the fatigue strength of A7N01 aluminum alloy by adjusting Si content".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 742(2019):15-22.