Preferential Distribution of Boron and its Effect on Microstructure and Mechanical Properties of (9 similar to 12)%Cr Martensitic Heat Resistant Steels

doi:10.11900/0412.1961.2019.00146

IMR OpenIR

	Preferential Distribution of Boron and its Effect on Microstructure and Mechanical Properties of (9 similar to 12)%Cr Martensitic Heat Resistant Steels
	Yang Ke 1; Liang Ye 1,2; Yan Wei 1,3; Shan Yiyin 1,3
通讯作者	Yan Wei(weiyan@imr.ac.cn)
	2020
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	56 期号:1 页码:53-65
摘要	Addition 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.
关键词	martensitic heat resistant steel B segregation M23C6 carbide Ostwald ripening
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China
DOI	10.11900/0412.1961.2019.00146
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFB0305201] ; National Natural Science Foundation of China[51971226]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000516535300004
出版者	SCIENCE PRESS
引用统计	被引频次：8[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/321006/137741
专题	中国科学院金属研究所
通讯作者	Yan Wei
作者单位	1.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
推荐引用方式 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.