Suppressed Plastic Anisotropy via Sigma-Phase Precipitation in CoCrFeMnNi High-Entropy Alloys
The effect of sigma-phase precipitation on plastic anisotropy of the equiatomic CoCrFeMnNi high-entropy alloy was investigated. Annealing at 700 °C after cold-rolling leads to the formation of the Cr-rich σ phase with a fraction of 2.7%. It is experimentally found that the planar anisotropy (∆<i&...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-03-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/17/6/1265 |
| _version_ | 1797240221083893760 |
|---|---|
| author | Tae Hyeong Kim Jaimyun Jung Jae Wung Bae |
| author_facet | Tae Hyeong Kim Jaimyun Jung Jae Wung Bae |
| author_sort | Tae Hyeong Kim |
| collection | DOAJ |
| description | The effect of sigma-phase precipitation on plastic anisotropy of the equiatomic CoCrFeMnNi high-entropy alloy was investigated. Annealing at 700 °C after cold-rolling leads to the formation of the Cr-rich σ phase with a fraction of 2.7%. It is experimentally found that the planar anisotropy (∆<i>r</i> = −0.16) of the CoCrFeMnNi alloy annealed at 700 °C is two times lower than that of the alloy annealed at 800 °C (∆<i>r</i> = −0.35). This observation was further supported by measuring the earing profile of cup specimens after the deep drawing process. The plastic strain ratio, normal anisotropy, and planar anisotropy were also predicted using the visco-plastic self-consistent model. The results indirectly indicated that the reduction of plastic anisotropy in alloy annealed at 700 °C can be attributed to the formation of the <i>σ</i> phase. |
| first_indexed | 2024-04-24T18:03:59Z |
| format | Article |
| id | doaj.art-83b6570fa7dd43dd92dae0044eddd1f3 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-04-24T18:03:59Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-83b6570fa7dd43dd92dae0044eddd1f32024-03-27T13:52:22ZengMDPI AGMaterials1996-19442024-03-01176126510.3390/ma17061265Suppressed Plastic Anisotropy via Sigma-Phase Precipitation in CoCrFeMnNi High-Entropy AlloysTae Hyeong Kim0Jaimyun Jung1Jae Wung Bae2Department of Metallurgical Engineering, Pukyong National University, Busan 48513, Republic of KoreaDepartment of Materials AI & Big-Data, Korea Institute of Materials Science (KIMS), Changwon 51508, Republic of KoreaDepartment of Metallurgical Engineering, Pukyong National University, Busan 48513, Republic of KoreaThe effect of sigma-phase precipitation on plastic anisotropy of the equiatomic CoCrFeMnNi high-entropy alloy was investigated. Annealing at 700 °C after cold-rolling leads to the formation of the Cr-rich σ phase with a fraction of 2.7%. It is experimentally found that the planar anisotropy (∆<i>r</i> = −0.16) of the CoCrFeMnNi alloy annealed at 700 °C is two times lower than that of the alloy annealed at 800 °C (∆<i>r</i> = −0.35). This observation was further supported by measuring the earing profile of cup specimens after the deep drawing process. The plastic strain ratio, normal anisotropy, and planar anisotropy were also predicted using the visco-plastic self-consistent model. The results indirectly indicated that the reduction of plastic anisotropy in alloy annealed at 700 °C can be attributed to the formation of the <i>σ</i> phase.https://www.mdpi.com/1996-1944/17/6/1265high-entropy alloysprecipitatesplastic anisotropyvisco-plastic self-consistent model |
| spellingShingle | Tae Hyeong Kim Jaimyun Jung Jae Wung Bae Suppressed Plastic Anisotropy via Sigma-Phase Precipitation in CoCrFeMnNi High-Entropy Alloys Materials high-entropy alloys precipitates plastic anisotropy visco-plastic self-consistent model |
| title | Suppressed Plastic Anisotropy via Sigma-Phase Precipitation in CoCrFeMnNi High-Entropy Alloys |
| title_full | Suppressed Plastic Anisotropy via Sigma-Phase Precipitation in CoCrFeMnNi High-Entropy Alloys |
| title_fullStr | Suppressed Plastic Anisotropy via Sigma-Phase Precipitation in CoCrFeMnNi High-Entropy Alloys |
| title_full_unstemmed | Suppressed Plastic Anisotropy via Sigma-Phase Precipitation in CoCrFeMnNi High-Entropy Alloys |
| title_short | Suppressed Plastic Anisotropy via Sigma-Phase Precipitation in CoCrFeMnNi High-Entropy Alloys |
| title_sort | suppressed plastic anisotropy via sigma phase precipitation in cocrfemnni high entropy alloys |
| topic | high-entropy alloys precipitates plastic anisotropy visco-plastic self-consistent model |
| url | https://www.mdpi.com/1996-1944/17/6/1265 |
| work_keys_str_mv | AT taehyeongkim suppressedplasticanisotropyviasigmaphaseprecipitationincocrfemnnihighentropyalloys AT jaimyunjung suppressedplasticanisotropyviasigmaphaseprecipitationincocrfemnnihighentropyalloys AT jaewungbae suppressedplasticanisotropyviasigmaphaseprecipitationincocrfemnnihighentropyalloys |