In Situ Study of the Microstructural Evolution of Nickel-Based Alloy with High Proportional Twin Boundaries Obtained by High-Temperature Annealing
In this paper, we report an in situ study regarding the microstructural evolution of a nickel-based alloy with high proportional twin boundaries by using electron backscatter diffraction techniques combined with the uniaxial tensile test. The study mainly focuses on the evolution of substructure, ge...
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MDPI AG
2023-04-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/7/2888 |
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| author | Chao Zhang Ming Sun Ruhan Ya Lulu Li Jingyi Cui Zhipeng Li Wenhuai Tian |
| author_facet | Chao Zhang Ming Sun Ruhan Ya Lulu Li Jingyi Cui Zhipeng Li Wenhuai Tian |
| author_sort | Chao Zhang |
| collection | DOAJ |
| description | In this paper, we report an in situ study regarding the microstructural evolution of a nickel-based alloy with high proportional twin boundaries by using electron backscatter diffraction techniques combined with the uniaxial tensile test. The study mainly focuses on the evolution of substructure, geometrically necessary dislocation, multiple types of grain boundaries (especially twin boundaries), and grain orientation. The results show that the Cr20Ni80 alloy can be obtained with up to 73% twin boundaries by annealing at 1100 °C for 30 min. During this deformation, dislocations preferentially accumulate near the twin boundary, and the strain also localizes at the twin boundary. With the increasing strain, dislocation interaction with grain boundaries leads to a decreasing trend of twin boundaries. However, when the strain is 0.024, the twin boundary is found to increase slightly. Meanwhile, the grain orientation gradually rotates to a stable direction and forms a Copper, S texture, and α-fiber <110>. Above all, during this deformation process, the alloy is deformed mainly by two deformation mechanisms: mechanical twinning and dislocation slip. |
| first_indexed | 2024-03-11T05:31:56Z |
| format | Article |
| id | doaj.art-89ce14d7bc1c42c099f0e5b9198620bc |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T05:31:56Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-89ce14d7bc1c42c099f0e5b9198620bc2023-11-17T17:06:38ZengMDPI AGMaterials1996-19442023-04-01167288810.3390/ma16072888In Situ Study of the Microstructural Evolution of Nickel-Based Alloy with High Proportional Twin Boundaries Obtained by High-Temperature AnnealingChao Zhang0Ming Sun1Ruhan Ya2Lulu Li3Jingyi Cui4Zhipeng Li5Wenhuai Tian6School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaState Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaIn this paper, we report an in situ study regarding the microstructural evolution of a nickel-based alloy with high proportional twin boundaries by using electron backscatter diffraction techniques combined with the uniaxial tensile test. The study mainly focuses on the evolution of substructure, geometrically necessary dislocation, multiple types of grain boundaries (especially twin boundaries), and grain orientation. The results show that the Cr20Ni80 alloy can be obtained with up to 73% twin boundaries by annealing at 1100 °C for 30 min. During this deformation, dislocations preferentially accumulate near the twin boundary, and the strain also localizes at the twin boundary. With the increasing strain, dislocation interaction with grain boundaries leads to a decreasing trend of twin boundaries. However, when the strain is 0.024, the twin boundary is found to increase slightly. Meanwhile, the grain orientation gradually rotates to a stable direction and forms a Copper, S texture, and α-fiber <110>. Above all, during this deformation process, the alloy is deformed mainly by two deformation mechanisms: mechanical twinning and dislocation slip.https://www.mdpi.com/1996-1944/16/7/2888electron backscattered diffractiontwin boundarygrain rotationcold deformation |
| spellingShingle | Chao Zhang Ming Sun Ruhan Ya Lulu Li Jingyi Cui Zhipeng Li Wenhuai Tian In Situ Study of the Microstructural Evolution of Nickel-Based Alloy with High Proportional Twin Boundaries Obtained by High-Temperature Annealing Materials electron backscattered diffraction twin boundary grain rotation cold deformation |
| title | In Situ Study of the Microstructural Evolution of Nickel-Based Alloy with High Proportional Twin Boundaries Obtained by High-Temperature Annealing |
| title_full | In Situ Study of the Microstructural Evolution of Nickel-Based Alloy with High Proportional Twin Boundaries Obtained by High-Temperature Annealing |
| title_fullStr | In Situ Study of the Microstructural Evolution of Nickel-Based Alloy with High Proportional Twin Boundaries Obtained by High-Temperature Annealing |
| title_full_unstemmed | In Situ Study of the Microstructural Evolution of Nickel-Based Alloy with High Proportional Twin Boundaries Obtained by High-Temperature Annealing |
| title_short | In Situ Study of the Microstructural Evolution of Nickel-Based Alloy with High Proportional Twin Boundaries Obtained by High-Temperature Annealing |
| title_sort | in situ study of the microstructural evolution of nickel based alloy with high proportional twin boundaries obtained by high temperature annealing |
| topic | electron backscattered diffraction twin boundary grain rotation cold deformation |
| url | https://www.mdpi.com/1996-1944/16/7/2888 |
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