Two-stage double peaks ageing and its effect on stress corrosion cracking susceptibility of Al-Zn-Mg alloy

doi:10.1016/j.jmst.2011.05.008

IMR OpenIR

	Two-stage double peaks ageing and its effect on stress corrosion cracking susceptibility of Al-Zn-Mg alloy
	Wang, Y. L.1,2; Jiang, H. C.1; Li, Z. M.1; Yan, D. S.1; Zhang, D.1,2; Rong, L. J.1
通讯作者	Jiang, H. C.(hcjiang@imr.ac.cn) ; Rong, L. J.(ljrong@imr.ac.cn)
	2018-07-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	34 期号:7 页码:1250-1257
摘要	Different artificial two-stage ageing behaviors and their effect on stress corrosion cracking (SCC) susceptibility of Al-Zn-Mg alloy have been investigated. The experimental results show that two hardness peaks present on the second-stage ageing-hardening curve when the first-stage ageing is dealt with comparatively lower temperature than the conventional one. The first peak is caused by dispersive and evenly distributed G.P. zones, while eta ' phases and coarsened G.P. zones contribute to the second peak. Tensile strength of experimental alloy raises 9.6% (33.2 MPa) and SCC susceptibility decreases 38.9% by applying the second peak ageing regime instead of conventional T73. Al-Zn-Mg alloy obtains high strength and SCC resistance due to its finely dispersive matrix precipitates (MPts), coarsened and discontinuous grain boundary precipitates (GBPs), as well as the narrow precipitate free zone (PFZ) in the second peak ageing condition. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Al-Zn-Mg alloy Two-stage ageing Double peaks ageing Stress corrosion cracking (SCC) susceptibility Grain boundary precipitates (GBPs)
资助者	National Key R&D Program of China ; Strategic Priority Program of the Chinese Academy of Sciences
DOI	10.1016/j.jmst.2011.05.008
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2016YFB1200600] ; National Key R&D Program of China[2016YFB1200504] ; Strategic Priority Program of the Chinese Academy of Sciences[XDB22000000]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000434132800024
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：48[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/321006/128104
专题	中国科学院金属研究所
通讯作者	Jiang, H. C.; Rong, L. J.
作者单位	1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Wang, Y. L.,Jiang, H. C.,Li, Z. M.,et al. Two-stage double peaks ageing and its effect on stress corrosion cracking susceptibility of Al-Zn-Mg alloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2018,34(7):1250-1257.
APA	Wang, Y. L.,Jiang, H. C.,Li, Z. M.,Yan, D. S.,Zhang, D.,&Rong, L. J..(2018).Two-stage double peaks ageing and its effect on stress corrosion cracking susceptibility of Al-Zn-Mg alloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,34(7),1250-1257.
MLA	Wang, Y. L.,et al."Two-stage double peaks ageing and its effect on stress corrosion cracking susceptibility of Al-Zn-Mg alloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 34.7(2018):1250-1257.