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Secondary Precipitation Behavior of Nitride in the Electro-slag Remelted Structure of Alloy 690
Wang, Min; Chen, Bo; Hao, Xian-Chao; Ma, Ying-Che; Liu, Kui; Ma, YC (reprint author), Chinese Acad Sci, Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang 110016, Peoples R China.
2017-08-01
发表期刊ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
卷号30期号:8页码:771-780
摘要The precipitation and evolution of secondary nitrides (S-nitrides) in the Alloy 690 electro-slag remelted (ESR) structure were investigated. Experimental results indicate that S-nitrides precipitated in the interdendritic region of the ESR structure at temperatures higher than 1100 degrees C. S-nitrides could spread throughout the entire interdendritic area after sufficient exposure, and they were more numerous and much finer than primary nitrides. Furthermore, after studying the evolution of S-nitride particles at 1100, 1200 and 1300 degrees C, it was determined that the precipitation of S-nitrides was controlled by the diffusion of nitrogen. In addition, by investigating the elemental segregation of ESR structure and calculating critical Ti concentrations, S-nitride precipitation was found to be thermodynamically inevitable in the Alloy 690 ESR structure.; The precipitation and evolution of secondary nitrides (S-nitrides) in the Alloy 690 electro-slag remelted (ESR) structure were investigated. Experimental results indicate that S-nitrides precipitated in the interdendritic region of the ESR structure at temperatures higher than 1100 degrees C. S-nitrides could spread throughout the entire interdendritic area after sufficient exposure, and they were more numerous and much finer than primary nitrides. Furthermore, after studying the evolution of S-nitride particles at 1100, 1200 and 1300 degrees C, it was determined that the precipitation of S-nitrides was controlled by the diffusion of nitrogen. In addition, by investigating the elemental segregation of ESR structure and calculating critical Ti concentrations, S-nitride precipitation was found to be thermodynamically inevitable in the Alloy 690 ESR structure.
部门归属[wang, min ; chen, bo ; hao, xian-chao ; ma, ying-che ; liu, kui] chinese acad sci, key lab nucl mat & safety assessment, inst met res, shenyang 110016, peoples r china
关键词Alloy 690 Esr Nitride Precipitation
学科领域Metallurgy & Metallurgical Engineering
资助者Chinese Academy of Sciences Innovation Foundation [CXJJ14-M44]
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/78028
专题中国科学院金属研究所
通讯作者Ma, YC (reprint author), 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
Wang, Min,Chen, Bo,Hao, Xian-Chao,et al. Secondary Precipitation Behavior of Nitride in the Electro-slag Remelted Structure of Alloy 690[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2017,30(8):771-780.
APA Wang, Min,Chen, Bo,Hao, Xian-Chao,Ma, Ying-Che,Liu, Kui,&Ma, YC .(2017).Secondary Precipitation Behavior of Nitride in the Electro-slag Remelted Structure of Alloy 690.ACTA METALLURGICA SINICA-ENGLISH LETTERS,30(8),771-780.
MLA Wang, Min,et al."Secondary Precipitation Behavior of Nitride in the Electro-slag Remelted Structure of Alloy 690".ACTA METALLURGICA SINICA-ENGLISH LETTERS 30.8(2017):771-780.
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