CAS OpenIR  > 中科院上海应用物理研究所2011-2018年
The formation of eutectic phases and hot cracks in one Ni-Mo-Cr superalloy
Li, J; Shrestha, SL; Long, Y; Li, ZJ; Zhou, XT; Li, ZJ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Thorium Molten Salts Reactor Ctr, Shanghai 201800, Peoples R China.
2016
Source PublicationMATERIALS & DESIGN
ISSN0261-3069
Volume93Issue:-Pages:324—333
Subtype期刊文献
AbstractThe structure and the formationmechanism of brittle eutectic phases and hot cracks formed at grain boundaries were investigated in two Ni-Mo-Cr superalloys with different silicon contents (0.06 and 0.46 wt.%). The eutectic phases and hot cracks can be observed along the rolling direction in the 0.46 wt.% Si heat when heated to 1335 degrees C or a higher peak temperature up to 1365 degrees C. Exposure to the higher peak temperatures resulted in the formation of larger eutectic phases and hot cracks in the higher silicon heat. Conversely, there are fewer eutectic phases and smaller hot cracks forming in the low-silicon heat when heated to 1365 degrees C. The eutectic phases were identified as gamma-M6C' type. Based on the constitutional liquation theory and thermodynamic calculations, it was found that the formation of the eutectic phases and hot cracks is due to the localized melting of primary M6C carbides and surrounding Si-riched matrix. The degree of elements segregation in liquid films determines whether liquid films solidify into eutectic phases or cause hot cracks. This model can reasonably explain the observed phenomena and contribute to designing appropriate solid-solution treatment process and welding procedure to avoid brittle phases and cracks in the Ni-Mo-Cr superalloy. (C) 2015 Elsevier Ltd. All rights reserved.
KeywordHeat-affected Zone Discontinuous Precipitation Liquation Cracking Inconel 718 Microstructure Temperature Alloy Reactors Carbide Silicon
DOI10.1016/j.matdes.2015.12.152
Indexed BySCI
Language英语
WOS IDWOS:000369587500036
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/25866
Collection中科院上海应用物理研究所2011-2018年
Corresponding AuthorLong, Y; Li, ZJ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Thorium Molten Salts Reactor Ctr, Shanghai 201800, Peoples R China.
Recommended Citation
GB/T 7714
Li, J,Shrestha, SL,Long, Y,et al. The formation of eutectic phases and hot cracks in one Ni-Mo-Cr superalloy[J]. MATERIALS & DESIGN,2016,93(-):324—333.
APA Li, J,Shrestha, SL,Long, Y,Li, ZJ,Zhou, XT,&Li, ZJ .(2016).The formation of eutectic phases and hot cracks in one Ni-Mo-Cr superalloy.MATERIALS & DESIGN,93(-),324—333.
MLA Li, J,et al."The formation of eutectic phases and hot cracks in one Ni-Mo-Cr superalloy".MATERIALS & DESIGN 93.-(2016):324—333.
Files in This Item:
File Name/Size DocType Version Access License
The formation of eut(2974KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li, J]'s Articles
[Shrestha, SL]'s Articles
[Long, Y]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li, J]'s Articles
[Shrestha, SL]'s Articles
[Long, Y]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li, J]'s Articles
[Shrestha, SL]'s Articles
[Long, Y]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: The formation of eutectic phases and hot cracks in one Ni-Mo-Cr superalloy.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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