IMR OpenIR
Effect of Cr content on the microstructural stability and impact-toughness evolution of a Ni-Fe-based weld metal
Wu, Dong1,2; Li, Dianzhong3; Lu, Shanping1,3
Corresponding AuthorLu, Shanping(shplu@imr.ac.cn)
2018-06-15
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume749Pages:465-472
AbstractMicrostructural stability and impact-toughness evolution of a Ni-Fe-based weld metal with different Cr contents was investigated during long-term thermal exposures up to 10000 h at 700 degrees C. With an increase in the Cr content from 21.1 to 23.5 at.%, plate-like sigma (sigma) and alpha-Cr phases formed during the thermal exposure. These phases were mainly located in the interdendritic areas and grew significantly as the thermal exposure time increased. The coarsening process of the gamma' phase obeyed the Lifshitz, Slyozov, and Wagner (LSW) model, and the gamma' particles maintained a coherent relationship with the gamma matrix during the thermal exposure. Carbides (M23C6) formed and coarsened at the grain boundaries, and their distribution gradually transformed from discontinuous to continuous during the thermal exposure. The evolutions of the gamma' phase and M23C6 carbides were not significantly affected by the Cr-content variation. As the thermal exposure time increased, the room-temperature impact toughness degraded significantly, and a ductile (intragranular)/brittle (mixed intergranular and intragranular) transition occurred. The degradation of impact toughness mainly occurred due to coarsening of the M23C6 carbides along the grain boundaries and the growth of plate-like phases (sigma, alpha-Cr) in the interdendritic areas. (C) 2018 Elsevier B.V. All rights reserved.
KeywordMetal Grain boundaries Scanning and transmission electron microscopy X-ray diffraction High temperature alloys
Funding OrganizationNational High Technology Research and Development Program
DOI10.1016/j.jallcom.2018.03.314
Indexed BySCI
Language英语
Funding ProjectNational High Technology Research and Development Program[2012AA03A501]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000432666200053
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/128114
Collection中国科学院金属研究所
Corresponding AuthorLu, Shanping
Affiliation1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Wu, Dong,Li, Dianzhong,Lu, Shanping. Effect of Cr content on the microstructural stability and impact-toughness evolution of a Ni-Fe-based weld metal[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2018,749:465-472.
APA Wu, Dong,Li, Dianzhong,&Lu, Shanping.(2018).Effect of Cr content on the microstructural stability and impact-toughness evolution of a Ni-Fe-based weld metal.JOURNAL OF ALLOYS AND COMPOUNDS,749,465-472.
MLA Wu, Dong,et al."Effect of Cr content on the microstructural stability and impact-toughness evolution of a Ni-Fe-based weld metal".JOURNAL OF ALLOYS AND COMPOUNDS 749(2018):465-472.
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
[Wu, Dong]'s Articles
[Li, Dianzhong]'s Articles
[Lu, Shanping]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wu, Dong]'s Articles
[Li, Dianzhong]'s Articles
[Lu, Shanping]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wu, Dong]'s Articles
[Li, Dianzhong]'s Articles
[Lu, Shanping]'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.