IMR OpenIR
Investigation of Solidification and Segregation Characteristics of Cast Ni-Base Superalloy K417G
Gong, L; Chen, B; Du, ZH; Zhang, MS; Liu, RC; Liu, K; Chen, B (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
2018-03-01
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume34Issue:3Pages:541-550
AbstractDifferential scanning calorimetry (DSC) analysis, isothermal solidification experiment and Thermo-Calc simulation were employed to investigate solidification characteristics of K417G Ni-base superalloy. Electron probe microanalysis (EPMA) was employed to analyze the segregation characteristics. Liquidus, solidus and the formation temperatures of main phases were measured. In the process of solidification, the volume fraction of liquid dropped dramatically in the initial stage, while the dropping rate became very low in the final stage due to severe segregation of positive segregation elements into the residual liquid. The solidification began with the formation of primary gamma. Then with solidification proceeding, Ti and Mo were enriched in the liquid interdendrite, which resulted in the precipitation of MC carbides in the interdendrite. Al accumulated into liquid at the initial stage, but gathered to solid later due to the precipitation of gamma/gamma' eutectic at the intermediate stage of solidification. However, Co tended to segregate toward the solid phase. In the case of K417G alloy, combining DSC analysis and isothermal solidification experiment is a good way to investigate the solidification characteristics. Thermo-Calc simulation can serve as reference to investigate K417G alloy. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.; Differential scanning calorimetry (DSC) analysis, isothermal solidification experiment and Thermo-Calc simulation were employed to investigate solidification characteristics of K417G Ni-base superalloy. Electron probe microanalysis (EPMA) was employed to analyze the segregation characteristics. Liquidus, solidus and the formation temperatures of main phases were measured. In the process of solidification, the volume fraction of liquid dropped dramatically in the initial stage, while the dropping rate became very low in the final stage due to severe segregation of positive segregation elements into the residual liquid. The solidification began with the formation of primary gamma. Then with solidification proceeding, Ti and Mo were enriched in the liquid interdendrite, which resulted in the precipitation of MC carbides in the interdendrite. Al accumulated into liquid at the initial stage, but gathered to solid later due to the precipitation of gamma/gamma' eutectic at the intermediate stage of solidification. However, Co tended to segregate toward the solid phase. In the case of K417G alloy, combining DSC analysis and isothermal solidification experiment is a good way to investigate the solidification characteristics. Thermo-Calc simulation can serve as reference to investigate K417G alloy. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
description.department[gong, li ; chen, bo ; du, zhanhui ; zhang, mengshu ; liu, ruichang ; liu, kui] chinese acad sci, inst met res, shenyang 110016, liaoning, peoples r china
KeywordMc Carbide Microstructure Behavior Parameters Alloy
Subject AreaMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79448
Collection中国科学院金属研究所
Corresponding AuthorChen, B (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Gong, L,Chen, B,Du, ZH,et al. Investigation of Solidification and Segregation Characteristics of Cast Ni-Base Superalloy K417G[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2018,34(3):541-550.
APA Gong, L.,Chen, B.,Du, ZH.,Zhang, MS.,Liu, RC.,...&Chen, B .(2018).Investigation of Solidification and Segregation Characteristics of Cast Ni-Base Superalloy K417G.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,34(3),541-550.
MLA Gong, L,et al."Investigation of Solidification and Segregation Characteristics of Cast Ni-Base Superalloy K417G".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 34.3(2018):541-550.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Gong, L]'s Articles
[Chen, B]'s Articles
[Du, ZH]'s Articles
Baidu academic
Similar articles in Baidu academic
[Gong, L]'s Articles
[Chen, B]'s Articles
[Du, ZH]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Gong, L]'s Articles
[Chen, B]'s Articles
[Du, ZH]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.