Corrosion behavior of 8-ferrite in AISI 316 austenitic stainless steel exposed to oxygen-saturated lead-bismuth eutectic at 550 °C

doi:10.1016/j.matchar.2024.113930

IMR OpenIR

	Corrosion behavior of 8-ferrite in AISI 316 austenitic stainless steel exposed to oxygen-saturated lead-bismuth eutectic at 550 °C
	Chen, Shenghu 1; Wang, Qiyu 1,2; Xie, Ang 1,2; Rong, Lijian 1
通讯作者	Chen, Shenghu(chensh@imr.ac.cn)
	2024-05-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	211 页码:13
摘要	8-ferrite is usually found in the 300 series austenitic stainless steels (ASS), but the role of 8-ferrite on corrosion behaviors exposed to oxygen-controlled lead-bismuth eutectic (LBE) has not yet been elucidated. The corrosion behaviors of AISI 316 ASS containing 8-ferrite in the oxygen-saturated static LBE at 550 degrees C were studied in terms of their solution-treated and accelerated-aging treated conditions. The 8-ferrite and decomposed 8-ferrite exhibit the superior resistance to oxidation attack compared to the austenite, and the 8-ferrite possesses a better corrosion resistance than the decomposed 8-ferrite. Compared with the austenite, the higher diffusivities of Cr and Si in 8-ferrite cause a reduction in the critical concentration required for the formation of chromium oxide and Si-rich oxide. A mixture of Cr2O3 oxide and Fe-Cr-Si spinel oxide developed on the surface of 8-ferrite can effectively impede the metal transfer, leading to the superior resistance to oxidation attack. The retained 8-ferrite and M23C6 carbides in the decomposed 8-ferrite oxidizes independently into FeCr2O4 and Cr2O3 oxides, respectively. The presence of Cr2O3 scale around the retained 8-ferrite decreases its oxidation rate, resulting in the non-uniform oxide phenomenon.
关键词	Austenitic stainless steel 8-Ferrite Decomposed 8-ferrite Oxidation corrosion Lead-bismuth eutectic
资助者	National Natural Science Foundation of China ; CNNC Science Fund for Talented Young Scholars ; Shanghai university (China)
DOI	10.1016/j.matchar.2024.113930
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[U23B2074] ; National Natural Science Foundation of China[51871218] ; CNNC Science Fund for Talented Young Scholars ; Shanghai university (China)
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:001236743500001
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：5[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/321006/186572
专题	中国科学院金属研究所
通讯作者	Chen, Shenghu
作者单位	1.Chinese Acad Sci, Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Chen, Shenghu,Wang, Qiyu,Xie, Ang,et al. Corrosion behavior of 8-ferrite in AISI 316 austenitic stainless steel exposed to oxygen-saturated lead-bismuth eutectic at 550 °C[J]. MATERIALS CHARACTERIZATION,2024,211:13.
APA	Chen, Shenghu,Wang, Qiyu,Xie, Ang,&Rong, Lijian.(2024).Corrosion behavior of 8-ferrite in AISI 316 austenitic stainless steel exposed to oxygen-saturated lead-bismuth eutectic at 550 °C.MATERIALS CHARACTERIZATION,211,13.
MLA	Chen, Shenghu,et al."Corrosion behavior of 8-ferrite in AISI 316 austenitic stainless steel exposed to oxygen-saturated lead-bismuth eutectic at 550 °C".MATERIALS CHARACTERIZATION 211(2024):13.