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Strength, strain capacity and toughness of five dual-phase pipeline steels
Ren, Yi1; Shi, Xian-bo2,3; Yang, Zhen-guo2,3; Shan, Yi-yin2,3; Ye, Wei3; Cai, Gui-xi3; Yang, Ke3
Corresponding AuthorShi, Xian-bo(xbshi@imr.ac.cn)
2021-01-16
Source PublicationJOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
ISSN1006-706X
Pages10
AbstractThe effect of microstructures on strength, strain capacity and low temperature toughness of a micro-alloyed pipeline steel was elucidated. Five various dual-phase microstructures, namely, acicular ferrite and a small amount of (around 2 vol.%) polygonal ferrite (AF + PF), polygonal ferrite and bainite (PF + B), polygonal ferrite and martensite/austenite islands (PF + M/A), polygonal ferrite and martensite (PF + M) and elongated polygonal ferrite and martensite (ePF + M), have been studied. Experimental results show that AF + PF microstructure has high yield strength and excellent low temperature toughness, whereas its yield ratio is the highest. Polygonal ferrite-based dual-phase steels, PF + B, PF + M/A and PF + M microstructures show better strain capacity and low temperature toughness. The strain capacity and low temperature toughness of ePF + M microstructure are the worst due to its high strength. The relationship between microstructure, strength, strain capacity and toughness has been established. Based on the results, the optimum microstructure for a better combination of strength, strain capacity and toughness is suggested to be the one having appropriate polygonal ferrite as second phase in an acicular ferrite matrix.
KeywordPipeline steel Dual-phase microstructure Strength Strain capacity Toughness
Funding OrganizationNational Key Research and Development Program of China ; State Key Laboratory of Metal Material for Marine Equipment and Application Funding ; Doctoral Scientific Research Foundation of Liaoning Province
DOI10.1007/s42243-020-00522-w
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFB0304901] ; National Key Research and Development Program of China[2018YFC0310302] ; National Key Research and Development Program of China[2018YFC0310304] ; State Key Laboratory of Metal Material for Marine Equipment and Application Funding[SKLMEA-K201901] ; Doctoral Scientific Research Foundation of Liaoning Province[20180540083]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000608095700002
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/158961
Collection中国科学院金属研究所
Corresponding AuthorShi, Xian-bo
Affiliation1.State Key Lab Met Mat Marine Equipment & Applicat, Anshan 114009, Liaoning, Peoples R China
2.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Ren, Yi,Shi, Xian-bo,Yang, Zhen-guo,et al. Strength, strain capacity and toughness of five dual-phase pipeline steels[J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,2021:10.
APA Ren, Yi.,Shi, Xian-bo.,Yang, Zhen-guo.,Shan, Yi-yin.,Ye, Wei.,...&Yang, Ke.(2021).Strength, strain capacity and toughness of five dual-phase pipeline steels.JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,10.
MLA Ren, Yi,et al."Strength, strain capacity and toughness of five dual-phase pipeline steels".JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL (2021):10.
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