Mechanism of the dependence of precipitation behavior on stress level during stress-aging in an Al-Zn-Mg alloy

doi:10.1016/j.jallcom.2024.177072

IMR OpenIR

	Mechanism of the dependence of precipitation behavior on stress level during stress-aging in an Al-Zn-Mg alloy
	Zhang, Duo 1; Jiang, Haichang 1; Cui, Zhenjie 2; Liu, Xudong 1; Rong, Lijian 1
通讯作者	Zhang, Duo(dzhang15s@imr.ac.cn) ; Jiang, Haichang(hcjiang@imr.ac.cn)
	2025-01-05
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	1010 页码:9
摘要	Elastic stress plays a crucial role in controlling the precipitation characteristics of precipitates during the artificial aging of age-hardening metal materials. This study investigates the effects of stress level on the precipitation of precipitates in an Al-Zn-Mg alloy, using a combination of small-angle X-ray scattering, transmission electron microscopy, and differential scanning calorimetry to provide a quantitative comparison of the precipitates. The results demonstrate that the hardness of stress-aged alloy almost monotonically increases with higher applied external stress. Moreover, the precipitation behavior of precipitates varies markedly under different stress conditions. The studied alloy aged under low stress levels predominantly exhibited semi-coherent eta phases characterized by higher precipitate number density (6.0 similar to 7.0 x 10(22) m(-3)) and smaller precipitate size (3.28 similar to 3.66 nm) compared to stress-free aged alloy (similar to 1.9 x 10(22) m(-3), similar to 5.46 nm). Under high stress levels, enhanced dislocation diffusion and aggregation promote the heterogeneous nucleation and the formation of coarse. phases. This work provides further insights into manipulating the precipitation behavior of Al-Zn-Mg alloy through applied stress field, potentially offering solutions to achieve superior comprehensive properties in these alloys.
关键词	Al-Zn-Mg alloys Stress-aging Stress levels Precipitation kinetics
资助者	China Postdoctoral Science Foun-dation ; Guangxi Science and Technology Major Program
DOI	10.1016/j.jallcom.2024.177072
收录类别	SCI
语种	英语
资助项目	China Postdoctoral Science Foun-dation[2022M713215] ; Guangxi Science and Technology Major Program[2023AA08011]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001340362000001
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/190853
专题	中国科学院金属研究所
通讯作者	Zhang, Duo; Jiang, Haichang
作者单位	1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Binzhou Inst Technol, Shandong Key Lab Adv Aluminium Mat & Technol, Binzhou 256600, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Duo,Jiang, Haichang,Cui, Zhenjie,et al. Mechanism of the dependence of precipitation behavior on stress level during stress-aging in an Al-Zn-Mg alloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2025,1010:9.
APA	Zhang, Duo,Jiang, Haichang,Cui, Zhenjie,Liu, Xudong,&Rong, Lijian.(2025).Mechanism of the dependence of precipitation behavior on stress level during stress-aging in an Al-Zn-Mg alloy.JOURNAL OF ALLOYS AND COMPOUNDS,1010,9.
MLA	Zhang, Duo,et al."Mechanism of the dependence of precipitation behavior on stress level during stress-aging in an Al-Zn-Mg alloy".JOURNAL OF ALLOYS AND COMPOUNDS 1010(2025):9.