Study on W-rich M3B2 borides in a 9Cr3W3CoB heat-resistant steel

doi:10.1016/j.jmrt.2020.12.054

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	Study on W-rich M3B2 borides in a 9Cr3W3CoB heat-resistant steel
	Liang, Ye 1,2; Yan, Wei 2,3; Shi, Xianbo 2,3; Li, Yanfen 2,3; Shi, Quanqiang 2,3; Wang, Wei 2,3; Shan, Yiyin 2,3; Yang, Ke 2
刊名	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
	2021
卷号	10 页码:594-604
关键词	Heat-resistant steel Boron W-rich borides Aging
ISSN号	2238-7854
DOI	10.1016/j.jmrt.2020.12.054
通讯作者	Yan, Wei(weiyan@imr.ac.cn) ; Yang, Ke(kyang@imr.ac.cn)
英文摘要	In a 9Cr3W3CoB heat-resistant steel with 150 ppm B, the evolution of W-rich M3B2 type borides during aging at temperatures of 650, 700, 750 degrees C for different times was investigated. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), electron probe microanalysis (EPMA) and secondary ion mass spectroscopy (SIMS) were employed to characterize the morphology evolution of the W-rich M3B2 type borides. Most of B was discovered to be present in M3B2-type (M = Fe, W, Cr, V and Nb) borides which were unevenly distributed in the matrix and could not be eliminated by normal heat-treatment. However, these borides could dissolve during prolonged isothermal exposure, where the dissolution process was accelerated by increasing aging temperature. It is indicated that the W-rich M(3)B(2 )type borides are thermodynamically metastable at high temperature. Their temporary existence postpones the nucleation and growth of Laves phase and prevents B from segregating in M23C6 carbides. W-rich M3B2 type borides are not responsible for cleavage fracture initiation when they are dissolved after aging at high temperatures for 2000 h. (C) 2020 The Authors. Published by Elsevier B.V.
资助项目	National Natural Science Foundation of China[51971226] ; National Basic Research Program of China[2017YFB0305201]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000621114900002
资助机构	National Natural Science Foundation of China ; National Basic Research Program of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/161219]
专题	金属研究所_中国科学院金属研究所
通讯作者	Yan, Wei; Yang, Ke
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, 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	Liang, Ye,Yan, Wei,Shi, Xianbo,et al. Study on W-rich M3B2 borides in a 9Cr3W3CoB heat-resistant steel[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2021,10:594-604.
APA	Liang, Ye.,Yan, Wei.,Shi, Xianbo.,Li, Yanfen.,Shi, Quanqiang.,...&Yang, Ke.(2021).Study on W-rich M3B2 borides in a 9Cr3W3CoB heat-resistant steel.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,10,594-604.
MLA	Liang, Ye,et al."Study on W-rich M3B2 borides in a 9Cr3W3CoB heat-resistant steel".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 10(2021):594-604.