Coupling Effect Mechanism of the δ-Ferrite and M23C6 on the Mechanical Properties of 9Cr-Steel Deposited Metals

doi:10.1007/s40195-024-01760-7

IMR OpenIR

	Coupling Effect Mechanism of the δ-Ferrite and M₂₃C₆ on the Mechanical Properties of 9Cr-Steel Deposited Metals
	Sun, Qishan 1,2,3; Wei, Shitong 1,3; Lu, Shanping 1,3
通讯作者	Wei, Shitong(stwei@imr.ac.cn) ; Lu, Shanping(shplu@imr.ac.cn)
	2024-10-01
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	18
摘要	9Cr ferritic/martensitic (9Cr F/M) steels are considered ideal structural materials for various nuclear energy systems. However, delta-ferrite (delta), as a controlled phase, may occur in its welds. Three deposited metals with different carbon contents (0.04, 0.07, and 0.10 wt%) were investigated using experimental and finite element simulation methods. The results showed that the incomplete peritectic reaction, the incomplete delta to austenite phase transition, and the segregation of ferrite-stabilized elements led to the residual delta. The amount and morphology of delta significantly influence the mechanical properties. After increasing the carbon content, the increase in strength comes mainly from precipitation strengthening and dislocation strengthening, the presence of delta will reduce the strength. During the impact process, delta affects the absorbed energy for the stable crack growth through its morphology, and M23C6 affects the crack formation energy through its quantity. By decreasing the carbon content to a certain extent, the reduction of M23C6 content and the generation of large polygonal delta can effectively improve the toughness of 9Cr-steel deposited metals.
关键词	Deposited metals 9Cr-steels delta-ferrite Mechanical properties
资助者	LingChuang Research Project of China National Nuclear Corporation, China Institute of Atomic Energy ; Natural Science Foundation of Heilongjiang Province
DOI	10.1007/s40195-024-01760-7
收录类别	SCI
语种	英语
资助项目	LingChuang Research Project of China National Nuclear Corporation, China Institute of Atomic Energy[E141L803J1] ; Natural Science Foundation of Heilongjiang Province[TD2021E006]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001326697300003
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计	被引频次：2[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/321006/190405
专题	中国科学院金属研究所
通讯作者	Wei, Shitong; Lu, Shanping
作者单位	1.Chinese Acad Sci, CAS Key Lab Nucl Mat & Safety Assessment, Inst Met Res, 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, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Sun, Qishan,Wei, Shitong,Lu, Shanping. Coupling Effect Mechanism of the δ-Ferrite and M₂₃C₆ on the Mechanical Properties of 9Cr-Steel Deposited Metals[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2024:18.
APA	Sun, Qishan,Wei, Shitong,&Lu, Shanping.(2024).Coupling Effect Mechanism of the δ-Ferrite and M₂₃C₆ on the Mechanical Properties of 9Cr-Steel Deposited Metals.ACTA METALLURGICA SINICA-ENGLISH LETTERS,18.
MLA	Sun, Qishan,et al."Coupling Effect Mechanism of the δ-Ferrite and M₂₃C₆ on the Mechanical Properties of 9Cr-Steel Deposited Metals".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2024):18.