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Influence of Ta content on microstructure and creep behavior of a Ni-Co base disc superalloy
Zhu, C. Z.1,2; Zhang, R.1; Cui, C. Y.1; Zhou, Y. Z.1; Liang, F. G.3; Liu, X.3; Sun, X. F.1
Corresponding AuthorZhang, R.(rzhang@imr.ac.cn) ; Cui, C. Y.(chycui@imr.ac.cn)
2021-01-20
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume802Pages:10
AbstractThis study investigated the influence of Ta content (i.e. 0 wt%, 2 wt%, and 4 wt%) on microstructure and creep behavior of a Ni-Co base disc superalloy at 760 degrees C/480 MPa. It was found that creep rupture life and the minimum creep strain rate showed a trend of first increase and then decrease with the increase of Ta content. The microstructure observations indicated that Ta addition promoted the increase of volume fraction of gamma', the precipitation of MC carbide and eta-phase, but inhibited the growth of gamma' and the precipitation of M23C6 carbide at grain boundaries during creep. The mechanisms related to creep behavior were discussed, and it was deemed that the higher gamma' volume fraction, finer size of gamma', larger gamma/gamma' misfit, lower atomic diffusion rate, inhibited M23C6 carbide and the palisade-like distribution of eta-phase may be responsible for the enhancement of the primary and tertiary creep resistance.
KeywordNi-Co base superalloy Tantalum Microstructure Creep behavior
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China ; Doctoral Start-up Foundation of Liaoning Province
DOI10.1016/j.msea.2020.140646
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2017YFA0700703] ; National Key R&D Program of China[2019YFA0705304] ; National Natural Science Foundation of China[51671189] ; Doctoral Start-up Foundation of Liaoning Province
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000612553100001
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/160577
Collection中国科学院金属研究所
Corresponding AuthorZhang, R.; Cui, C. Y.
Affiliation1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, 96 Jinzhai Rd, Hefei 230026, Peoples R China
3.Xian Thermal Power Res Inst Co Ltd, 136 Xingqing Rd, Xian 710032, Peoples R China
Recommended Citation
GB/T 7714
Zhu, C. Z.,Zhang, R.,Cui, C. Y.,et al. Influence of Ta content on microstructure and creep behavior of a Ni-Co base disc superalloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,802:10.
APA Zhu, C. Z..,Zhang, R..,Cui, C. Y..,Zhou, Y. Z..,Liang, F. G..,...&Sun, X. F..(2021).Influence of Ta content on microstructure and creep behavior of a Ni-Co base disc superalloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,802,10.
MLA Zhu, C. Z.,et al."Influence of Ta content on microstructure and creep behavior of a Ni-Co base disc superalloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 802(2021):10.
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