Precipitate evolution and mechanical properties of Si-modified A286 alloy aged at 510 °C

doi:10.1016/j.msea.2024.146478

IMR OpenIR

	Precipitate evolution and mechanical properties of Si-modified A286 alloy aged at 510 °C
	Su, Yuanfei 1,2,3; Zhang, Shuzhan 1,2,3; Shi, Xianbo 1,3; Wang, Wei 1,3; Li, Yanfen 1,3; Yan, Wei 1,3; Rong, Lijian 1,3
通讯作者	Shi, Xianbo(xbshi@imr.ac.cn) ; Yan, Wei(weiyan@imr.ac.cn)
	2024-05-01
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	899 页码:12
摘要	Si-modified A286 alloy was designed to be compatible with liquid lead-bismuth eutectic (LBE) metal. The addition of Si resulted in a distinct microstructure compared to A286 alloy. In this study, we investigated the microstructure and mechanical properties of the experimental alloy after 510 degrees C isothermal aging for 5000 h. The results showed the presence of two types of G-phase in the alloy before aging: one with a core-shell morphology, the other with a chain-like morphology. After long-term aging, the Si-modified A286 alloy maintained the same refined grains as in the SAT(solid solution and aging treatment) specimen, with minimal changes observed in the two G-phases even after 5000 h of aging. However, a newly precipitated submicron spherical-like G-phase was observed on the grain boundaries after 500 h of aging, leading to a significant decrease in impact toughness. These spherical-like G-phases gradually coarsened with increasing aging time and eventually stabilized after 2000 h. The reduction in impact toughness in the Si-modified A286 alloy was attributed to the precipitation of the spherical-like G-phase.
关键词	Si-modified A286 alloy G-phase Microstructure evolution Mechanical properties
资助者	LingChuang Research Project of China National Nuclear Corporation ; Natural Science Foundation of Liaoning Province
DOI	10.1016/j.msea.2024.146478
收录类别	SCI
语种	英语
资助项目	LingChuang Research Project of China National Nuclear Corporation ; Natural Science Foundation of Liaoning Province[2023 -MS -019]
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:001228863800001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：3[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/321006/186537
专题	中国科学院金属研究所
通讯作者	Shi, Xianbo; Yan, Wei
作者单位	1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Su, Yuanfei,Zhang, Shuzhan,Shi, Xianbo,et al. Precipitate evolution and mechanical properties of Si-modified A286 alloy aged at 510 °C[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2024,899:12.
APA	Su, Yuanfei.,Zhang, Shuzhan.,Shi, Xianbo.,Wang, Wei.,Li, Yanfen.,...&Rong, Lijian.(2024).Precipitate evolution and mechanical properties of Si-modified A286 alloy aged at 510 °C.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,899,12.
MLA	Su, Yuanfei,et al."Precipitate evolution and mechanical properties of Si-modified A286 alloy aged at 510 °C".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 899(2024):12.