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Effect of NbC and VC carbides on microstructure and strength of high-strength low-alloyed steels for oil country tubular goods
Zeng, Tianyi1,2; Zhang, Shuzhan1,2; Shi, Xianbo1,3; Wang, Wei1,3; Yan, Wei1,3; Yang, Ke1
Corresponding AuthorShi, Xianbo(xbshi@imr.ac.cn)
2021-09-08
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume824Pages:10
AbstractHigh-strength low-alloyed (HSLA) steels for oil country tubular goods (OCTGs) are usually microalloyed with niobium (Nb) and vanadium (V). In this work, the microstructure and strength of HSLA steels with different Nb and V contents were studied with the purpose of investigating the role of NbC and VC carbides. The results showed that NbC carbides were responsible for restraining the growth of prior austenite grains, and when the austenitizing temperature was below 910 degrees C, it has been found that the prior austenite grain size was similar in steels with 0.02 and 0.006 wt% Nb addition. VC carbides could impede dislocation annihilation and refine Crrich carbides and martensitic blocks during tempering. Moreover, VC carbides mainly contributed to the tempering softening resistance so that the V-bearing steels exhibited a higher strength than the V-free steel after tempering at 690 degrees C-730 degrees C. To illustrate the high tempering softening resistance of V-bearing steels, the changes in various strengthening contributions induced by V addition were quantitatively evaluated. The calculation results indicated that the main reason for the high tempering softening resistance of V-bearing steels was precipitation strengthening by nanosized VC carbides, in contrast to dislocation strengthening, substructure strengthening, and precipitation strengthening due to the refinement of Cr-rich carbides.
KeywordCarbides Tempering softening resistance Prior austenite grain size Strengthening mechanism Martensite
Funding OrganizationYouth Innovation Promotion Association of Chinese Academy of Sciences
DOI10.1016/j.msea.2021.141845
Indexed BySCI
Language英语
Funding ProjectYouth Innovation Promotion Association of Chinese Academy of Sciences[2017233]
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000687736200003
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/166862
Collection中国科学院金属研究所
Corresponding AuthorShi, Xianbo
Affiliation1.Chinese Acad Sci, Inst Met Res, Shichangxu Innovat Ctr Adv Mat, 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
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GB/T 7714
Zeng, Tianyi,Zhang, Shuzhan,Shi, Xianbo,et al. Effect of NbC and VC carbides on microstructure and strength of high-strength low-alloyed steels for oil country tubular goods[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,824:10.
APA Zeng, Tianyi,Zhang, Shuzhan,Shi, Xianbo,Wang, Wei,Yan, Wei,&Yang, Ke.(2021).Effect of NbC and VC carbides on microstructure and strength of high-strength low-alloyed steels for oil country tubular goods.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,824,10.
MLA Zeng, Tianyi,et al."Effect of NbC and VC carbides on microstructure and strength of high-strength low-alloyed steels for oil country tubular goods".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 824(2021):10.
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