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Effects of Heat Treatment on Microstructural Evolution and Stress Rupture Properties of a Directionally Solidified Nickel-Based Superalloy during Long-Term Thermal Exposure
Jiang, X. W.1; Wu, J. J.1,2; Song, P.1,2; Yin, B.1,2; Wang, D.1; Wang, Y.1; Dong, J. S.1; Shen, J.1; Li, H.1; Lou, L. H.1
Corresponding AuthorJiang, X. W.(xwjiang@imr.ac.cn)
2020-04-04
Source PublicationJOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
ISSN1059-9495
Pages15
AbstractEffects of a low-temperature solution heat treatment (SHT) below gamma ' solvus temperature and a high-temperature partial solution heat treatment (SHT) above gamma ' solvus temperature on microstructural evolution and stress rupture properties of a directionally solidified nickel-based superalloy during long-term thermal exposure at 900 degrees C were investigated in detail. The two heat treatments generated different microstructures, e.g., different gamma ' sizes and surface fractions of residual gamma-gamma ' eutectic phase. Carbides in the two heat-treated samples exhibited different microstructural stability during the subsequent long-term thermal exposure. The creep lifetime at 870 degrees C/310 MPa of the samples treated by the high-temperature SHT is more than two times of that treated by the low-temperature SHT, whereas the creep lifetime of the samples treated by the high-temperature partial SHT exhibited a sharp reduction after 1000-h exposure and then decreased by a steady rate up to 10,000-h exposure. In comparison, the creep lifetime of the samples treated by the low-temperature SHT exhibits a slower reduction rate from 0- up to 10,000-h exposure.
Keywordheat treatment microstructure stress rupture thermal exposure
Funding OrganizationNational Key Research and Development Program of China ; National Science and Technology Major Project ; National Natural Science Foundation of China
DOI10.1007/s11665-020-04754-5
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFB0701403] ; National Science and Technology Major Project[2017VII-0008-0101] ; National Natural Science Foundation of China[51674235] ; National Natural Science Foundation of China[51631008]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000523400700001
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/138063
Collection中国科学院金属研究所
Corresponding AuthorJiang, X. W.
Affiliation1.Chinese Acad Sci, Inst Met Res, Superalloys Div, 72 Wenhua Rd, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
Recommended Citation
GB/T 7714
Jiang, X. W.,Wu, J. J.,Song, P.,et al. Effects of Heat Treatment on Microstructural Evolution and Stress Rupture Properties of a Directionally Solidified Nickel-Based Superalloy during Long-Term Thermal Exposure[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2020:15.
APA Jiang, X. W..,Wu, J. J..,Song, P..,Yin, B..,Wang, D..,...&Lou, L. H..(2020).Effects of Heat Treatment on Microstructural Evolution and Stress Rupture Properties of a Directionally Solidified Nickel-Based Superalloy during Long-Term Thermal Exposure.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,15.
MLA Jiang, X. W.,et al."Effects of Heat Treatment on Microstructural Evolution and Stress Rupture Properties of a Directionally Solidified Nickel-Based Superalloy during Long-Term Thermal Exposure".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2020):15.
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