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Study on W-rich M3B2 borides in a 9Cr3W3CoB heat-resistant steel
Liang, Ye1,2; Yan, Wei1,3; Shi, Xianbo1,3; Li, Yanfen1,3; Shi, Quanqiang1,3; Wang, Wei1,3; Shan, Yiyin1,3; Yang, Ke1
Corresponding AuthorYan, Wei(weiyan@imr.ac.cn) ; Yang, Ke(kyang@imr.ac.cn)
2021
Source PublicationJOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN2238-7854
Volume10Pages:594-604
AbstractIn 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.
KeywordHeat-resistant steel Boron W-rich borides Aging
Funding OrganizationNational Natural Science Foundation of China ; National Basic Research Program of China
DOI10.1016/j.jmrt.2020.12.054
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51971226] ; National Basic Research Program of China[2017YFB0305201]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000621114900002
PublisherELSEVIER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/161220
Collection中国科学院金属研究所
Corresponding AuthorYan, Wei; Yang, Ke
Affiliation1.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
Recommended Citation
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.
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