IMR OpenIR
Effect of ruthenium on microstructure and high-temperature creep properties of fourth generation Ni-based single-crystal superalloys
Song, W.1,2; Wang, X. G.1; Li, J. G.1; Ye, L. H.1; Hou, G. C.1; Yang, Y. H.1; Liu, J. L.1; Liu, J. D.1; Pei, W. L.2; Zhou, Y. Z.1; Sun, X. F.1
Corresponding AuthorWang, X. G.(xgwang11b@imr.ac.cn) ; Pei, W. L.(peiwl@atm.neu.edu.cn) ; Sun, X. F.(xfsun@imr.ac.cn)
2020-01-20
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume772Pages:10
AbstractThe effects of Ru on microstructure and creep properties of the two alloys were investigated in detail. According to the creep curves of the two alloys at 1140 degrees C/137 MPa, the creep rupture life was significantly improved with the increase of Ru and the mechanism of each stage during the creep deformation was different. Thus, the evolution of the gamma' phase, the dislocation configuration, and the effect of Ru on solution strengthening were discussed. The gamma/gamma' lattice misfit of the initial microstructure presented increasingly negative as the content of Ru increased, which resulted in smaller and more regular gamma' particles in the initial state. Meanwhile, more consistent and denser dislocation networks on the gamma/gamma' interface during creep deformation were examined. Hence, the addition of Ru decreased the minimum creep rate and prolonged the secondary creep stage. Moreover, the so-called "reverse partitioning" behavior and enhancement of gamma matrix strength appeared with the increase of Ru. When the alloy contained 2.5 wt% Ru, the rapidly increasing in creep strain rate induced by the topological inversion appeared. When the alloy included 3.5 wt% Ru, the needle-like and rod-like topologically close-packed (TCP) phases were observed occasionally. The stress and the supersaturation of refractory elements resulted in the precipitation of the TCP phase. The dramatic increase of the creep strain rate was principally related to the propagation of micro-cracks around the casting and creep voids in the necked regions.
KeywordNi-based superalloys Ruthenium Elevated temperature creep gamma/gamma ' lattice misfit Interfacial dislocation networks
Funding OrganizationNational Science and Technology Major Project (2017) ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; State Key Lab of Advanced Metals and Materials Open Fund
DOI10.1016/j.msea.2019.138646
Indexed BySCI
Language英语
Funding ProjectNational Science and Technology Major Project (2017)[VI-0002-0072] ; National Key R&D Program of China[2017YFA0700704] ; National Natural Science Foundation of China (NSFC)[51601192] ; National Natural Science Foundation of China (NSFC)[51671188] ; State Key Lab of Advanced Metals and Materials Open Fund[2018-Z07]
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000509621500089
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/137252
Collection中国科学院金属研究所
Corresponding AuthorWang, X. G.; Pei, W. L.; Sun, X. F.
Affiliation1.Chinese Acad Sci, Inst Met Res, Superalloys Div, 72 Wenhua Rd, Shenyang 110016, Peoples R China
2.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China
Recommended Citation
GB/T 7714
Song, W.,Wang, X. G.,Li, J. G.,et al. Effect of ruthenium on microstructure and high-temperature creep properties of fourth generation Ni-based single-crystal superalloys[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2020,772:10.
APA Song, W..,Wang, X. G..,Li, J. G..,Ye, L. H..,Hou, G. C..,...&Sun, X. F..(2020).Effect of ruthenium on microstructure and high-temperature creep properties of fourth generation Ni-based single-crystal superalloys.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,772,10.
MLA Song, W.,et al."Effect of ruthenium on microstructure and high-temperature creep properties of fourth generation Ni-based single-crystal superalloys".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 772(2020):10.
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
[Song, W.]'s Articles
[Wang, X. G.]'s Articles
[Li, J. G.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Song, W.]'s Articles
[Wang, X. G.]'s Articles
[Li, J. G.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Song, W.]'s Articles
[Wang, X. G.]'s Articles
[Li, J. G.]'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.