Transfer from M3B2 boride to BN nitride in 9Cr3W3CoB martensitic heat-resistant steel

doi:10.1016/j.jmrt.2021.05.004

IMR OpenIR

	Transfer from M3B2 boride to BN nitride in 9Cr3W3CoB martensitic heat-resistant steel
	Liang, Ye 1,2; Yan, Wei 1,3; Shi, Xianbo 1,3; Li, Yanfen 1,3; Wang, Wei 1,3; Shi, Quanqiang 1,3; Shan, Yiyin 1,3; Yang, Ke 1,3
通讯作者	Yan, Wei(weiyan@imr.ac.cn) ; Yang, Ke(kyang@imr.ac.cn)
	2021-07-01
发表期刊	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN	2238-7854
卷号	13 页码:513-523
摘要	Boron is generally added into heat-resistant steel to improve the creep strength. The existence of M3B2 borides and BN nitrides should be avoided due to the consumption of effective B. Before eliminating the harmful borides, it is important to elucidate their thermodynamic behavior during aging. Therefore, the formation of BN nitride in a 9Cr3W3CoB steel during high temperature aging was investigated. It was found that majority of B was presented as M3B2 borides in the as-treated steel. Due to the low content of N and the existence of M3B2 borides, only a few BN nitrides were distributed along PAGBs. Metastable M3B2 borides would gradually dissolve during isothermal exposure and then lead to the precipitation of BN nitride, which has been verified by employing thermo-mechanical treatment (TMT) to eliminate M3B2 borides. It was revealed under scanning electron microscopy (SEM) that BN could not precipitate during high temperature aging in the TMT sample without M3B2 borides. The nucleation and growth of BN nitride was thermodynamic processes affected by both aging time and temperature. Its number density and size increased with increasing aging temperature. During aging at 800 degrees C, BN nitride nucleated quickly and the shape evolved from subsphaeroidal to irregular even with sharp corners. Unfortunately, the BN particles with sharp corners were detrimental to toughness. (C) 2021 The Authors. Published by Elsevier B.V.
关键词	M3B2 BN Aging Precipitation Morphology
资助者	National Natural Science Foundation of China ; National Basic Research Program of China
DOI	10.1016/j.jmrt.2021.05.004
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[2017YFB 0305201]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000677670200009
出版者	ELSEVIER
引用统计	被引频次：10[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/321006/159639
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, Inst Met Res, Shi Changxu 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	Liang, Ye,Yan, Wei,Shi, Xianbo,et al. Transfer from M3B2 boride to BN nitride in 9Cr3W3CoB martensitic heat-resistant steel[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2021,13:513-523.
APA	Liang, Ye.,Yan, Wei.,Shi, Xianbo.,Li, Yanfen.,Wang, Wei.,...&Yang, Ke.(2021).Transfer from M3B2 boride to BN nitride in 9Cr3W3CoB martensitic heat-resistant steel.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,13,513-523.
MLA	Liang, Ye,et al."Transfer from M3B2 boride to BN nitride in 9Cr3W3CoB martensitic heat-resistant steel".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 13(2021):513-523.