Effect of NbC and VC carbides on microstructure and strength of high-strength low-alloyed steels for oil country tubular goods

doi:10.1016/j.msea.2021.141845

IMR OpenIR

	Effect of NbC and VC carbides on microstructure and strength of high-strength low-alloyed steels for oil country tubular goods
	Zeng, Tianyi 1,2; Zhang, Shuzhan 1,2; Shi, Xianbo 1,3; Wang, Wei 1,3; Yan, Wei 1,3; Yang, Ke 1
通讯作者	Shi, Xianbo(xbshi@imr.ac.cn)
	2021-09-08
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	824 页码:10
摘要	High-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.
关键词	Carbides Tempering softening resistance Prior austenite grain size Strengthening mechanism Martensite
资助者	Youth Innovation Promotion Association of Chinese Academy of Sciences
DOI	10.1016/j.msea.2021.141845
收录类别	SCI
语种	英语
资助项目	Youth Innovation Promotion Association of Chinese Academy of Sciences[2017233]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000687736200003
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：31[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/321006/166862
专题	中国科学院金属研究所
通讯作者	Shi, Xianbo
作者单位	1.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
推荐引用方式 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.