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Effect of Rejuvenation Heat Treatment on the Creep Property and Microstructural Evolution of a Ni-Base Superalloy
Wang, Linning1; Liu, Yuan2; Liang, Jingjing3
Corresponding AuthorLiu, Yuan(Yuanliu@cauc.edu.cn)
2020-02-01
Source PublicationAPPLIED SCIENCES-BASEL
Volume10Issue:3Pages:13
AbstractInterrupted creep tests were performed on a polycrystalline Ni-base superalloy, and rejuvenation heat treatment (RHT) was carried out to restore the creep resistance. During creep deformation, the microstructural evolution can be characterized as coarsening and rafting of gamma' precipitates, formation of dislocation networks in matrix channels, gamma' shearing by dislocations and carbides transformation from MC to M6C type. In the sample with low precrept strain, the dislocation networks can be effectively removed after RHT and the size and morphology of gamma' particles were similar to that just after heat treatment. However, the microstructure in the sample with higher creep strain after RHT cannot be fully restored to the original state in terms of dislocations and distribution of gamma' particles. The subsequent creep results exhibit that creep property is also relevant to the precrept strain, which exhibits a good agreement with microstructure observations. In addition, RHT cannot reverse the carbide transformation from MC to M6C type but enhances this process, which can be evident by the change of the area fraction of these two types of carbides. The effect of carbides transformation on the creep resistance of K465 alloy is not pronounced.
KeywordNi-base superalloy rejuvenation treatment creep carbides gamma ' precipitates
DOI10.3390/app10031187
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Engineering ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000525305900456
PublisherMDPI
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/138433
Collection中国科学院金属研究所
Corresponding AuthorLiu, Yuan
Affiliation1.Tianjin Univ Technol & Educ, Sch Mech Engn, Tianjin 300222, Peoples R China
2.Civil Aviat Univ China, Coll Aeronaut Engn, Tianjin 300300, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Wang, Linning,Liu, Yuan,Liang, Jingjing. Effect of Rejuvenation Heat Treatment on the Creep Property and Microstructural Evolution of a Ni-Base Superalloy[J]. APPLIED SCIENCES-BASEL,2020,10(3):13.
APA Wang, Linning,Liu, Yuan,&Liang, Jingjing.(2020).Effect of Rejuvenation Heat Treatment on the Creep Property and Microstructural Evolution of a Ni-Base Superalloy.APPLIED SCIENCES-BASEL,10(3),13.
MLA Wang, Linning,et al."Effect of Rejuvenation Heat Treatment on the Creep Property and Microstructural Evolution of a Ni-Base Superalloy".APPLIED SCIENCES-BASEL 10.3(2020):13.
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