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

doi:10.1016/j.jmrt.2020.12.054

IMR OpenIR

	Study on W-rich M3B2 borides in a 9Cr3W3CoB heat-resistant steel
	Liang, Ye 1,2; Yan, Wei 1,3; Shi, Xianbo 1,3; Li, Yanfen 1,3; Shi, Quanqiang 1,3; Wang, Wei 1,3; Shan, Yiyin 1,3; Yang, Ke 1
通讯作者	Yan, Wei(weiyan@imr.ac.cn) ; Yang, Ke(kyang@imr.ac.cn)
	2021
发表期刊	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN	2238-7854
卷号	10 页码:594-604
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.
关键词	Heat-resistant steel Boron W-rich borides Aging
资助者	National Natural Science Foundation of China ; National Basic Research Program of China
DOI	10.1016/j.jmrt.2020.12.054
收录类别	SCI
语种	英语
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
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000621114900002
出版者	ELSEVIER
引用统计	被引频次：5[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/321006/161220
专题	中国科学院金属研究所
通讯作者	Yan, Wei; Yang, Ke
作者单位	1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, 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	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.