| Effect of Rejuvenation Heat Treatment on the Creep Property and Microstructural Evolution of a Ni-Base Superalloy | |
| Wang, Linning1; Liu, Yuan2; Liang, Jingjing3 | |
| Corresponding Author | Liu, Yuan(Yuanliu@cauc.edu.cn) |
| 2020-02-01 | |
| Source Publication | APPLIED SCIENCES-BASEL
 |
| Volume | 10Issue:3Pages:13 |
| Abstract | Interrupted 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. |
| Keyword | Ni-base superalloy rejuvenation treatment creep carbides gamma ' precipitates |
| DOI | 10.3390/app10031187 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Chemistry ; Engineering ; Materials Science ; Physics |
| WOS Subject | Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied |
| WOS ID | WOS:000525305900456 |
| Publisher | MDPI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/138430 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Yuan |
| Affiliation | 1.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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