Crystal Plasticity Model Analysis of the Effect of Short-Range Order on Strength-Plasticity of Medium Entropy Alloys
Numerous studies have demonstrated the widespread presence of chemical short-range order (SRO) in medium and high entropy alloys (M/HEAs). However, the mechanism of their influence on macroscopic mechanical behavior remains to be understood. In this paper, we propose a novel dislocation-based model...
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| Format: | Article |
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MDPI AG
2022-10-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/12/10/1757 |
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| author | Chen Li Fuhua Cao Yan Chen Haiying Wang Lanhong Dai |
| author_facet | Chen Li Fuhua Cao Yan Chen Haiying Wang Lanhong Dai |
| author_sort | Chen Li |
| collection | DOAJ |
| description | Numerous studies have demonstrated the widespread presence of chemical short-range order (SRO) in medium and high entropy alloys (M/HEAs). However, the mechanism of their influence on macroscopic mechanical behavior remains to be understood. In this paper, we propose a novel dislocation-based model of crystal plasticity, by considering both the dislocation blocking and coplanar slip induced by SRO. The effect of SRO on the plastic deformation of CoCrNi MEAs was investigated. We found that the yield strength increases monotonically with increasing SRO-induced slip resistance, but the elongation first appeared to increase and then decreased. Further analysis suggested that the plastic elongation is a result of the competition between grain rotation-induced deformation coordination and stress concentration, which depends on the slip resistance of the SRO. |
| first_indexed | 2024-03-09T19:47:28Z |
| format | Article |
| id | doaj.art-9cdf758cc3034005a0a878b1ddc04ec5 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T19:47:28Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-9cdf758cc3034005a0a878b1ddc04ec52023-11-24T01:20:18ZengMDPI AGMetals2075-47012022-10-011210175710.3390/met12101757Crystal Plasticity Model Analysis of the Effect of Short-Range Order on Strength-Plasticity of Medium Entropy AlloysChen Li0Fuhua Cao1Yan Chen2Haiying Wang3Lanhong Dai4State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaState Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaState Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaState Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaState Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaNumerous studies have demonstrated the widespread presence of chemical short-range order (SRO) in medium and high entropy alloys (M/HEAs). However, the mechanism of their influence on macroscopic mechanical behavior remains to be understood. In this paper, we propose a novel dislocation-based model of crystal plasticity, by considering both the dislocation blocking and coplanar slip induced by SRO. The effect of SRO on the plastic deformation of CoCrNi MEAs was investigated. We found that the yield strength increases monotonically with increasing SRO-induced slip resistance, but the elongation first appeared to increase and then decreased. Further analysis suggested that the plastic elongation is a result of the competition between grain rotation-induced deformation coordination and stress concentration, which depends on the slip resistance of the SRO.https://www.mdpi.com/2075-4701/12/10/1757short-range ordermedium and high entropy alloyscrystal plasticity model |
| spellingShingle | Chen Li Fuhua Cao Yan Chen Haiying Wang Lanhong Dai Crystal Plasticity Model Analysis of the Effect of Short-Range Order on Strength-Plasticity of Medium Entropy Alloys Metals short-range order medium and high entropy alloys crystal plasticity model |
| title | Crystal Plasticity Model Analysis of the Effect of Short-Range Order on Strength-Plasticity of Medium Entropy Alloys |
| title_full | Crystal Plasticity Model Analysis of the Effect of Short-Range Order on Strength-Plasticity of Medium Entropy Alloys |
| title_fullStr | Crystal Plasticity Model Analysis of the Effect of Short-Range Order on Strength-Plasticity of Medium Entropy Alloys |
| title_full_unstemmed | Crystal Plasticity Model Analysis of the Effect of Short-Range Order on Strength-Plasticity of Medium Entropy Alloys |
| title_short | Crystal Plasticity Model Analysis of the Effect of Short-Range Order on Strength-Plasticity of Medium Entropy Alloys |
| title_sort | crystal plasticity model analysis of the effect of short range order on strength plasticity of medium entropy alloys |
| topic | short-range order medium and high entropy alloys crystal plasticity model |
| url | https://www.mdpi.com/2075-4701/12/10/1757 |
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