Research Article Enhancing strength and stress corrosion cracking resistance in high-Mg Al-Mg alloys through nanostructuring and controlled annealing

doi:10.1016/j.jmst.2024.10.042

IMR OpenIR

	Research Article Enhancing strength and stress corrosion cracking resistance in high-Mg Al-Mg alloys through nanostructuring and controlled annealing
	Tang, Z. C.1,2; Xu, W.1; Zhao, D. . Y.1,3; Zhang, B.1
通讯作者	Zhang, B.(bxz011@imr.ac.cn)
	2025-07-20
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	224 页码:19-34
摘要	The strength of traditional Al-Mg alloys primarily depends on cold deformation and increasing Mg content, but it can become susceptible to stress corrosion cracking (SCC) when the Mg content is high ( > 3 wt.%). Simultaneous optimizing strength and SCC resistance in Al-Mg alloys is challenging. This study introduces a nanostructured Al-10Mg (10 wt.%) alloy with improved strength and SCC resistance by dynamic plastic deformation and optimized annealing. The as-deformed sample exhibits a nano-scaled lamellar structure. With rising annealing temperatures, structure size of the alloy increases while dislocation density decreases, transitioning lamellar to equiaxed grains. Nanostructured Al-10Mg alloys annealed at 250 degrees C exhibit superior mechanical properties and reduced SCC susceptibility at sensitization state. The high fraction of low-angle grain boundaries with a reduction in dislocation density can effectively suppress the nucleation and growth of grain boundary precipitates (GBPs) during sensitization, thereby maintaining a relatively low GBPs coverage. The results provide guidance for designing Al-Mg alloys that are stronger and more resistant to SCC with higher Mg content. (c) 2025 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Al-10Mg alloy Stress corrosion cracking Low angle grain boundary Nanostructure Dynamic plastic deformation
资助者	National Natural Science Foundation of China
DOI	10.1016/j.jmst.2024.10.042
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52171088]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001425026100001
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/180055
专题	中国科学院金属研究所
通讯作者	Zhang, B.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Liaoning Acad Mat, Shenyang 110167, Peoples R China
推荐引用方式 GB/T 7714	Tang, Z. C.,Xu, W.,Zhao, D. . Y.,et al. Research Article Enhancing strength and stress corrosion cracking resistance in high-Mg Al-Mg alloys through nanostructuring and controlled annealing[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2025,224:19-34.
APA	Tang, Z. C.,Xu, W.,Zhao, D. . Y.,&Zhang, B..(2025).Research Article Enhancing strength and stress corrosion cracking resistance in high-Mg Al-Mg alloys through nanostructuring and controlled annealing.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,224,19-34.
MLA	Tang, Z. C.,et al."Research Article Enhancing strength and stress corrosion cracking resistance in high-Mg Al-Mg alloys through nanostructuring and controlled annealing".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 224(2025):19-34.