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Effects of Ta on microstructural stability and mechanical properties of hot corrosion resistant Ni-based single crystal superalloys during long-term thermal exposure
Wu, Junjie1,2; Jiang, Xiangwei1; Wang, Yao1; Dong, Jiasheng1; Lou, Langhong1
Corresponding AuthorJiang, Xiangwei(xwjiang@imr.ac.cn)
2021-03-04
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume806Pages:10
AbstractThe effects of Ta on microstructural stability and mechanical properties of hot corrosion resistant Ni-based single crystal superalloys during long-term thermal exposure at 900 degrees C were investigated in the present study by comparing two experimental alloys with different content of Ta (6Ta and 6.7Ta). The results indicated that the addition of extra 0.7Ta increased the volume fraction of the gamma' precipitates and accelerated the coarsening rate of gamma' precipitates, facilitated the formation of misfit dislocation and precipitation of sigma phases. The 6.7Ta alloy exhibited higher hardness and better stress rupture properties than 6Ta and the variations of stress rupture properties during the exposure for 6Ta and 6.7Ta alloy are significantly different. The effects of gamma' coarsening, formation of sigma phases and misfit dislocations were taken into consideration to identify the reasons of variations of mechanical properties during the thermal exposure.
KeywordSingle crystal superalloy Microstructural stability Stress rupture properties
Funding OrganizationNational Science and Technology Major Project ; National Natural Science Foundation of China
DOI10.1016/j.msea.2021.140829
Indexed BySCI
Language英语
Funding ProjectNational Science and Technology Major Project[-0008-0101] ; National Natural Science Foundation of China[51674235] ; National Natural Science Foundation of China[91860201] ; National Natural Science Foundation of China[51631008]
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000620936000002
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/161116
Collection中国科学院金属研究所
Corresponding AuthorJiang, Xiangwei
Affiliation1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Wu, Junjie,Jiang, Xiangwei,Wang, Yao,et al. Effects of Ta on microstructural stability and mechanical properties of hot corrosion resistant Ni-based single crystal superalloys during long-term thermal exposure[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,806:10.
APA Wu, Junjie,Jiang, Xiangwei,Wang, Yao,Dong, Jiasheng,&Lou, Langhong.(2021).Effects of Ta on microstructural stability and mechanical properties of hot corrosion resistant Ni-based single crystal superalloys during long-term thermal exposure.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,806,10.
MLA Wu, Junjie,et al."Effects of Ta on microstructural stability and mechanical properties of hot corrosion resistant Ni-based single crystal superalloys during long-term thermal exposure".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 806(2021):10.
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