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Preferential Distribution of Boron and its Effect on Microstructure and Mechanical Properties of (9 similar to 12)%Cr Martensitic Heat Resistant Steels
Yang Ke1; Liang Ye1,2; Yan Wei1,3; Shan Yiyin1,3
Corresponding AuthorYan Wei(weiyan@imr.ac.cn)
2020
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume56Issue:1Pages:53-65
AbstractAddition of small amount of boron (B) in the (9 similar to 12)%Cr martensitic heat resistant steels can obviously prohibit the Ostwald ripening of M23C6 carbides so as to improve creep strength as well as creep rupture life. With the purpose of taking full advantages of B element, it is critical to make B preferentially distribute in (9 similar to 12)%Cr martensitic heat resistant steels. The mechanism of B preventing M23C6 carbides from ripening is also on the premise of dearly identifying the preferential distribution of B in the steels. Much concern has been growing over the preferential distribution of B in the research of (9 similar to 12)%Cr martensitic heat resistant steels. Therefore, this article gives a review on this aspect. Following a summary of the effect of B on mechanical properties, several commonly used characterizing methods for B segregation in the steels are introduced. Based on the physical metallurgy and the solution, diffusion mechanisms of B element, discussions on the preferential distribution of B element at prior austenite grain boundaries and in the M23C6 carbides as well as the related factors are emphasized. At last, two prevalent mechanisms of B restraining the coarsening of M23C6 carbides in (9 similar to 12)%Cr martensitic heat resistant steels are given by an intensive explanation so that the relationship between the preferential distribution of B and its advantage of increasing creep performance by suppressing the ripening M23C6 carbides are systematically elaborated, which gives a deep understanding of the role of B element in (9 similar to 12)%Cr martensitic heat resistant steels.
Keywordmartensitic heat resistant steel B segregation M23C6 carbide Ostwald ripening
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China
DOI10.11900/0412.1961.2019.00146
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFB0305201] ; National Natural Science Foundation of China[51971226]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000516535300004
PublisherSCIENCE PRESS
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/137741
Collection中国科学院金属研究所
Corresponding AuthorYan Wei
Affiliation1.Chinese Acad Sci, 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, Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Yang Ke,Liang Ye,Yan Wei,et al. Preferential Distribution of Boron and its Effect on Microstructure and Mechanical Properties of (9 similar to 12)%Cr Martensitic Heat Resistant Steels[J]. ACTA METALLURGICA SINICA,2020,56(1):53-65.
APA Yang Ke,Liang Ye,Yan Wei,&Shan Yiyin.(2020).Preferential Distribution of Boron and its Effect on Microstructure and Mechanical Properties of (9 similar to 12)%Cr Martensitic Heat Resistant Steels.ACTA METALLURGICA SINICA,56(1),53-65.
MLA Yang Ke,et al."Preferential Distribution of Boron and its Effect on Microstructure and Mechanical Properties of (9 similar to 12)%Cr Martensitic Heat Resistant Steels".ACTA METALLURGICA SINICA 56.1(2020):53-65.
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