Effect of Precipitation Behavior and Deformation Twinning Evolution on the Mechanical Properties of 16Cr-25.5Ni-4.2Mo Superaustenitic Stainless Steel Weld Metals

doi:10.1007/s40195-024-01787-w

IMR OpenIR

	Effect of Precipitation Behavior and Deformation Twinning Evolution on the Mechanical Properties of 16Cr-25.5Ni-4.2Mo Superaustenitic Stainless Steel Weld Metals
	Liu, Chenghao 1,2; Dong, Wenchao 1,3; Sun, Jian 1; Lu, Shanping 1
通讯作者	Sun, Jian(jsun16b@imr.ac.cn) ; Lu, Shanping(shplu@imr.ac.cn)
	2024-10-26
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	15
摘要	In the study, three 16Cr-25.5Ni-4.2Mo superaustenitic stainless steel weld metals with C contents of 0.082 wt%, 0.075 wt%, and 0.045 wt%, were prepared to investigate the microstructural evolution and its effect on mechanical behavior. At a C content of 0.082 wt%, the microstructure of weld metal consisted of austenite, M6C, and M23C6, where M6C was the main carbide. The number and average size of the M6C carbides significantly decreased as the C content decreased. At a C content of 0.045 wt%, only a very small number of M6C carbides were observed in the weld metal. For the tensile process, the number of deformation twins increased as the C content decreased, which introduced a stronger dynamic Hall-Petch effect, resulting in only a small decrease in the ultimate tensile strength of the weld metal. Meanwhile, the increase in deformation twins significantly enhanced the elongation of the weld metals. For the impact process, the impact energy increased from 204 to 241 J as the C content decreased. The crack initiation resistance was improved due to the reduction in M6C carbide, which inhibited cracking at the interface of M6C/matrix. Additionally, the crack propagation resistance was enhanced due to the increase in deformation twins, which consumed more impact energy.
关键词	Superaustenitic stainless steel weld metal Microstructural evolution Carbides Mechanical properties Deformation twins
资助者	Strategic Priority Research Program of the Chinese Academy of Sciences ; Natural Science Foundation of Heilongjiang Province ; Liaoning Provincial Doctoral Initiation Fund Project ; China Postdoctoral Science Foundation
DOI	10.1007/s40195-024-01787-w
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA0410201] ; Natural Science Foundation of Heilongjiang Province[TD2021E006] ; Liaoning Provincial Doctoral Initiation Fund Project[2022-BS-008] ; China Postdoctoral Science Foundation[2023T160654]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001342066900001
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/190985
专题	中国科学院金属研究所
通讯作者	Sun, Jian; Lu, Shanping
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.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Liu, Chenghao,Dong, Wenchao,Sun, Jian,et al. Effect of Precipitation Behavior and Deformation Twinning Evolution on the Mechanical Properties of 16Cr-25.5Ni-4.2Mo Superaustenitic Stainless Steel Weld Metals[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2024:15.
APA	Liu, Chenghao,Dong, Wenchao,Sun, Jian,&Lu, Shanping.(2024).Effect of Precipitation Behavior and Deformation Twinning Evolution on the Mechanical Properties of 16Cr-25.5Ni-4.2Mo Superaustenitic Stainless Steel Weld Metals.ACTA METALLURGICA SINICA-ENGLISH LETTERS,15.
MLA	Liu, Chenghao,et al."Effect of Precipitation Behavior and Deformation Twinning Evolution on the Mechanical Properties of 16Cr-25.5Ni-4.2Mo Superaustenitic Stainless Steel Weld Metals".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2024):15.