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Effect of Carbon Content on the Creep Rupture Properties and Microstructure of 316H Weld Metals
Zhao, Langlang1,2,3; Wei, Shitong1; Gao, Dianbao4; Lu, Shanping3
Corresponding AuthorLu, Shanping(shplu@imr.ac.cn)
2021-02-05
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Pages11
AbstractTwo types of 316 butt welds with carbon contents of 0.016% and 0.062% have been produced using the gas tungsten arc welding process. The delta-ferrite content decreased from 7.2 to 2.8% in volume as the carbon content increased. The creep-rupture strength and creep ductility of the two types of weld metals have been measured at 550 celcius over the stress range of 290-316 MPa and at 600 celcius over 230-265 MPa. The microstructure change and precipitation behavior of the weld metals were observed and related to the creep rupture properties. The creep rupture strength of the C2 (0.062% C) weld metal was higher than that of the C1 (0.016% C) weld metal at both 550 celcius and 600 celcius. At 550 celcius, as the decrease in the applied stress, the difference of the creep-rupture life between the two weld metals diminished due to the higher depletion rate of carbon by precipitation of M23C6 in the C2 weld metal, while at 600 celcius, the difference enlarged due to the massive precipitation of sigma phase and extensive crack formation and propagation along sigma/austenite boundaries in the C1 weld metal. For both the C1 and C2 weld metal, the decrease in ductility was adverse with the transformation percentage and related to products of the delta-ferrite transformation.
Keyword316 stainless steel weld metal Creep rupture properties δ -ferrite M23C6 σ phase
Funding OrganizationOpening Foundation of CAS Key Laboratory of Nuclear Material and Safety Assessment ; China Institute of Atomic Energy
DOI10.1007/s40195-020-01180-3
Indexed BySCI
Language英语
Funding ProjectOpening Foundation of CAS Key Laboratory of Nuclear Material and Safety Assessment[2019NMSAKF04] ; China Institute of Atomic Energy[2016-DGB-I-KYSC-0024]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000615154200001
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/159178
Collection中国科学院金属研究所
Corresponding AuthorLu, Shanping
Affiliation1.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, 72 Wenhua Rd, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
4.China First Heavy Ind, Nucl Power & Petrochem Business Grp, 1 Miangang Rd, Dalian 116113, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Langlang,Wei, Shitong,Gao, Dianbao,et al. Effect of Carbon Content on the Creep Rupture Properties and Microstructure of 316H Weld Metals[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2021:11.
APA Zhao, Langlang,Wei, Shitong,Gao, Dianbao,&Lu, Shanping.(2021).Effect of Carbon Content on the Creep Rupture Properties and Microstructure of 316H Weld Metals.ACTA METALLURGICA SINICA-ENGLISH LETTERS,11.
MLA Zhao, Langlang,et al."Effect of Carbon Content on the Creep Rupture Properties and Microstructure of 316H Weld Metals".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2021):11.
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