Effect of Service-Induced Degradation on Residual Stress Rupture Life of a Directionally Solidified Superalloy
The influence of service-induced degradation on residual life is very important for the safe service of turbine blades. In this study, a series of simulation experiments were conducted on a directionally solidified superalloy under (880–1020) °C/(70–220) MPa and interrupted after 500 h. Then, the st...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/12/2/267 |
| _version_ | 1827655933011951616 |
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| author | Xiaotong Guo Weijie Xing Heng Zhang Yong Li Hemeng Peng Chuan Yang |
| author_facet | Xiaotong Guo Weijie Xing Heng Zhang Yong Li Hemeng Peng Chuan Yang |
| author_sort | Xiaotong Guo |
| collection | DOAJ |
| description | The influence of service-induced degradation on residual life is very important for the safe service of turbine blades. In this study, a series of simulation experiments were conducted on a directionally solidified superalloy under (880–1020) °C/(70–220) MPa and interrupted after 500 h. Then, the stress rupture life of the interrupted specimens was tested under 980 °C/275 MPa. The results showed that the increase of simulated experiment temperature decreased the residual stress rupture life. In brief, the simulation experiments at 880 °C did not influence the residual stress rupture life of the alloy. The simulated experiments at 980 °C and 1050 °C mainly affected the microstructure of γ’ phase, while not γ/γ’ eutectic and carbides. After the stress rupture tests under 980 °C/275 MPa, cracks were located at the interfaces between carbides and γ matrix in the interdendritic regions. This study provides guidance on the degradation evaluation and safety service of the directionally solidified superalloys. |
| first_indexed | 2024-03-09T22:14:29Z |
| format | Article |
| id | doaj.art-9972b36d68f44fed894f8c9b6fd40d91 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-09T22:14:29Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-9972b36d68f44fed894f8c9b6fd40d912023-11-23T19:25:43ZengMDPI AGCrystals2073-43522022-02-0112226710.3390/cryst12020267Effect of Service-Induced Degradation on Residual Stress Rupture Life of a Directionally Solidified SuperalloyXiaotong Guo0Weijie Xing1Heng Zhang2Yong Li3Hemeng Peng4Chuan Yang5Chongqing CEPREI Industrial Technology Research Institute Co., Ltd., Chongqing 401332, ChinaAECC Beijing Institute of Aeronautical Materials, Beijing 100095, ChinaChina Electronic Product Reliability and Environmental Testing Research Institute, Guangzhou 511370, ChinaChongqing CEPREI Industrial Technology Research Institute Co., Ltd., Chongqing 401332, ChinaChongqing CEPREI Industrial Technology Research Institute Co., Ltd., Chongqing 401332, ChinaChongqing CEPREI Industrial Technology Research Institute Co., Ltd., Chongqing 401332, ChinaThe influence of service-induced degradation on residual life is very important for the safe service of turbine blades. In this study, a series of simulation experiments were conducted on a directionally solidified superalloy under (880–1020) °C/(70–220) MPa and interrupted after 500 h. Then, the stress rupture life of the interrupted specimens was tested under 980 °C/275 MPa. The results showed that the increase of simulated experiment temperature decreased the residual stress rupture life. In brief, the simulation experiments at 880 °C did not influence the residual stress rupture life of the alloy. The simulated experiments at 980 °C and 1050 °C mainly affected the microstructure of γ’ phase, while not γ/γ’ eutectic and carbides. After the stress rupture tests under 980 °C/275 MPa, cracks were located at the interfaces between carbides and γ matrix in the interdendritic regions. This study provides guidance on the degradation evaluation and safety service of the directionally solidified superalloys.https://www.mdpi.com/2073-4352/12/2/267directionally solidified superalloyservice induced degradationstress rupture propertymicrostructureγ’ phase |
| spellingShingle | Xiaotong Guo Weijie Xing Heng Zhang Yong Li Hemeng Peng Chuan Yang Effect of Service-Induced Degradation on Residual Stress Rupture Life of a Directionally Solidified Superalloy Crystals directionally solidified superalloy service induced degradation stress rupture property microstructure γ’ phase |
| title | Effect of Service-Induced Degradation on Residual Stress Rupture Life of a Directionally Solidified Superalloy |
| title_full | Effect of Service-Induced Degradation on Residual Stress Rupture Life of a Directionally Solidified Superalloy |
| title_fullStr | Effect of Service-Induced Degradation on Residual Stress Rupture Life of a Directionally Solidified Superalloy |
| title_full_unstemmed | Effect of Service-Induced Degradation on Residual Stress Rupture Life of a Directionally Solidified Superalloy |
| title_short | Effect of Service-Induced Degradation on Residual Stress Rupture Life of a Directionally Solidified Superalloy |
| title_sort | effect of service induced degradation on residual stress rupture life of a directionally solidified superalloy |
| topic | directionally solidified superalloy service induced degradation stress rupture property microstructure γ’ phase |
| url | https://www.mdpi.com/2073-4352/12/2/267 |
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