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| Structure, Microsegregation, and Precipitates of an Alloy 690 ESR Ingot in Industrial Scale | |
| Wang, Min; Zha, Xiangdong; Gao, Ming; Ma, Yingche; Liu, Kui; Li, Yiyi; ycma@imr.ac.cn | |
| 2015 | |
| Source Publication | METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
 |
| ISSN | 1073-5623 |
| Volume | 46AIssue:11Pages:5217-5231 |
| Abstract | The structure, interdendritic, and intergranular segregation, and precipitates of an Alloy 690 electro-slag remelting (ESR) ingot in commercial scale (3t) were investigated by the optical microscopy, electroprobe microanalysis, scanning electron microscopy, and transmission electron microscopy (TEM) techniques. The results indicate that the central longitudinal section of the ESR ingot comprised the ramp-up, steady-state, and hot-top regions, which could be easily distinguished from each other through the macrostructures of them. In the interdendritic area, Cr and Ti were enriched, while Ni and Fe were depleted, and the nominal segregation indexes (zeta (i) = C (0) (i) /C (interdendritic) (i) ) of Ti, Cr, and Ni were 0.40, 0.91, and 1.04, respectively, in the hot-top region where suffered the severest segregation. Nitrides, principally precipitated between dendrites, were identified as TiN by TEM and EDS. The morphology, size distribution, and volume fraction of them were determined as well. In terms of the intergranular area, Cr and C coexisted, while Ni and Fe were depleted. And the dendrite-like carbides continuously distributed on the interface between grains, which were identified as M23C6 by the selected area diffraction pattern. (C) The Minerals, Metals & Materials Society and ASM International 2015 |
| description.department | [wang, min ; zha, xiangdong ; gao, ming ; ma, yingche ; liu, kui ; li, yiyi] chinese acad sci, inst met res, key lab nucl mat & safety assessment, shenyang 110016, peoples r china |
| Funding Organization | Chinese Academy of Sciences Innovation Foundation [CXJJ-14-M44] |
| Indexed By | sci |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/75139 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | ycma@imr.ac.cn |
| Recommended Citation GB/T 7714 | Wang, Min,Zha, Xiangdong,Gao, Ming,et al. Structure, Microsegregation, and Precipitates of an Alloy 690 ESR Ingot in Industrial Scale[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2015,46A(11):5217-5231. |
| APA | Wang, Min.,Zha, Xiangdong.,Gao, Ming.,Ma, Yingche.,Liu, Kui.,...&ycma@imr.ac.cn.(2015).Structure, Microsegregation, and Precipitates of an Alloy 690 ESR Ingot in Industrial Scale.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,46A(11),5217-5231. |
| MLA | Wang, Min,et al."Structure, Microsegregation, and Precipitates of an Alloy 690 ESR Ingot in Industrial Scale".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 46A.11(2015):5217-5231. |
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