Temperature Effects on the Deformation Mechanisms in a Ni-Co-Based Superalloys
The tensile properties of a Ni-Co-based superalloy were investigated from room temperature to 900 °C. From 25 to 650 °C, the yield strength and tensile strength of the alloy decreased slightly, while the elongation decreased sharply. From 760 °C to 900 °C, the yield strength and tensile strength wer...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/12/10/1409 |
| _version_ | 1797473996741017600 |
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| author | Rui Hu Jiaheng Zhao Cheng Yang Jinhui Du Xian Luo Zhongnan Bi Bin Gan |
| author_facet | Rui Hu Jiaheng Zhao Cheng Yang Jinhui Du Xian Luo Zhongnan Bi Bin Gan |
| author_sort | Rui Hu |
| collection | DOAJ |
| description | The tensile properties of a Ni-Co-based superalloy were investigated from room temperature to 900 °C. From 25 to 650 °C, the yield strength and tensile strength of the alloy decreased slightly, while the elongation decreased sharply. From 760 °C to 900 °C, the yield strength and tensile strength were greatly reduced, while the elongation also had a low value. With the increase in temperature, the deformation mechanism transformed from anti-phase boundary shearing to stacking fault shearing, and then from deformation twinning to Orowan bypassing, respectively. Deformation twins were generated in the deformed alloy with high-density stacking faults and they can contribute to the high strength. The alloy in this study has good mechanical properties and hot working characteristics below 760 °C and can be used as a turbine disk, turbine blade, combustion chamber, and other aircraft structural parts. |
| first_indexed | 2024-03-09T20:25:05Z |
| format | Article |
| id | doaj.art-3b2028d0184d4b159305d85fbdb3e2bf |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-09T20:25:05Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-3b2028d0184d4b159305d85fbdb3e2bf2023-11-23T23:37:59ZengMDPI AGCrystals2073-43522022-10-011210140910.3390/cryst12101409Temperature Effects on the Deformation Mechanisms in a Ni-Co-Based SuperalloysRui Hu0Jiaheng Zhao1Cheng Yang2Jinhui Du3Xian Luo4Zhongnan Bi5Bin Gan6State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, ChinaBeijing Key Laboratory of Advanced High Temperature Materials, Central Iron and Steel Research Institute, Beijing 100081, ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, ChinaBeijing Key Laboratory of Advanced High Temperature Materials, Central Iron and Steel Research Institute, Beijing 100081, ChinaBeijing Key Laboratory of Advanced High Temperature Materials, Central Iron and Steel Research Institute, Beijing 100081, ChinaThe tensile properties of a Ni-Co-based superalloy were investigated from room temperature to 900 °C. From 25 to 650 °C, the yield strength and tensile strength of the alloy decreased slightly, while the elongation decreased sharply. From 760 °C to 900 °C, the yield strength and tensile strength were greatly reduced, while the elongation also had a low value. With the increase in temperature, the deformation mechanism transformed from anti-phase boundary shearing to stacking fault shearing, and then from deformation twinning to Orowan bypassing, respectively. Deformation twins were generated in the deformed alloy with high-density stacking faults and they can contribute to the high strength. The alloy in this study has good mechanical properties and hot working characteristics below 760 °C and can be used as a turbine disk, turbine blade, combustion chamber, and other aircraft structural parts.https://www.mdpi.com/2073-4352/12/10/1409nickel-based superalloydeformation mechanismmicrostructureintermediate-temperature brittleness |
| spellingShingle | Rui Hu Jiaheng Zhao Cheng Yang Jinhui Du Xian Luo Zhongnan Bi Bin Gan Temperature Effects on the Deformation Mechanisms in a Ni-Co-Based Superalloys Crystals nickel-based superalloy deformation mechanism microstructure intermediate-temperature brittleness |
| title | Temperature Effects on the Deformation Mechanisms in a Ni-Co-Based Superalloys |
| title_full | Temperature Effects on the Deformation Mechanisms in a Ni-Co-Based Superalloys |
| title_fullStr | Temperature Effects on the Deformation Mechanisms in a Ni-Co-Based Superalloys |
| title_full_unstemmed | Temperature Effects on the Deformation Mechanisms in a Ni-Co-Based Superalloys |
| title_short | Temperature Effects on the Deformation Mechanisms in a Ni-Co-Based Superalloys |
| title_sort | temperature effects on the deformation mechanisms in a ni co based superalloys |
| topic | nickel-based superalloy deformation mechanism microstructure intermediate-temperature brittleness |
| url | https://www.mdpi.com/2073-4352/12/10/1409 |
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