Effects of the Replacement of Co with Ni on the Microstructure, Mechanical Properties, and Age Hardening of AlCo<sub>1−x</sub>CrFeNi<sub>1+x</sub> High-Entropy Alloys
In this study, effects of the replacement of Co with Ni on the microstructure, mechanical properties, and age hardening of high-entropy alloys of AlCo<sub>1−x</sub>CrFeNi<sub>1+x</sub> (x = molar ratio; x = 0, 0.5, 1, denoted as X<sub>0</sub>, X<sub>0.5</...
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| Format: | Article |
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MDPI AG
2021-05-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/10/2665 |
| _version_ | 1797533464815206400 |
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| author | Che-Fu Lee Tao-Tsung Shun |
| author_facet | Che-Fu Lee Tao-Tsung Shun |
| author_sort | Che-Fu Lee |
| collection | DOAJ |
| description | In this study, effects of the replacement of Co with Ni on the microstructure, mechanical properties, and age hardening of high-entropy alloys of AlCo<sub>1−x</sub>CrFeNi<sub>1+x</sub> (x = molar ratio; x = 0, 0.5, 1, denoted as X<sub>0</sub>, X<sub>0.5</sub>, and X<sub>1</sub>, respectively) were investigated. These three alloys exhibited a dendritic structure comprising an ordered BCC matrix, a BCC phase, and an FCC or an ordered FCC phase. From X<sub>0</sub> to X<sub>1</sub> alloys, the yield stress and compressive stress decreased from 1202 and 1790 MPa to 693 and 1537 MPa, respectively. However, fracture strain increased from 0.15 to 0.42. Peak age hardening at 600 °C for the X<sub>0</sub> alloy was due to the precipitation of the (Cr,Fe)-rich σ phase. Peak age hardening for the X<sub>0.5</sub> and X<sub>1</sub> alloys was observed at 500 °C because of the precipitation of the σ phase and BCC phase, respectively. |
| first_indexed | 2024-03-10T11:15:51Z |
| format | Article |
| id | doaj.art-27044f2f470b4f1b8ea0a594ccf97cbe |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T11:15:51Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-27044f2f470b4f1b8ea0a594ccf97cbe2023-11-21T20:26:26ZengMDPI AGMaterials1996-19442021-05-011410266510.3390/ma14102665Effects of the Replacement of Co with Ni on the Microstructure, Mechanical Properties, and Age Hardening of AlCo<sub>1−x</sub>CrFeNi<sub>1+x</sub> High-Entropy AlloysChe-Fu Lee0Tao-Tsung Shun1Department of Materials Science and Engineering, Feng Chia University, Taichung 407, TaiwanDepartment of Materials Science and Engineering, Feng Chia University, Taichung 407, TaiwanIn this study, effects of the replacement of Co with Ni on the microstructure, mechanical properties, and age hardening of high-entropy alloys of AlCo<sub>1−x</sub>CrFeNi<sub>1+x</sub> (x = molar ratio; x = 0, 0.5, 1, denoted as X<sub>0</sub>, X<sub>0.5</sub>, and X<sub>1</sub>, respectively) were investigated. These three alloys exhibited a dendritic structure comprising an ordered BCC matrix, a BCC phase, and an FCC or an ordered FCC phase. From X<sub>0</sub> to X<sub>1</sub> alloys, the yield stress and compressive stress decreased from 1202 and 1790 MPa to 693 and 1537 MPa, respectively. However, fracture strain increased from 0.15 to 0.42. Peak age hardening at 600 °C for the X<sub>0</sub> alloy was due to the precipitation of the (Cr,Fe)-rich σ phase. Peak age hardening for the X<sub>0.5</sub> and X<sub>1</sub> alloys was observed at 500 °C because of the precipitation of the σ phase and BCC phase, respectively.https://www.mdpi.com/1996-1944/14/10/2665high-entropy alloymicrostructuremechanical propertiesage hardening |
| spellingShingle | Che-Fu Lee Tao-Tsung Shun Effects of the Replacement of Co with Ni on the Microstructure, Mechanical Properties, and Age Hardening of AlCo<sub>1−x</sub>CrFeNi<sub>1+x</sub> High-Entropy Alloys Materials high-entropy alloy microstructure mechanical properties age hardening |
| title | Effects of the Replacement of Co with Ni on the Microstructure, Mechanical Properties, and Age Hardening of AlCo<sub>1−x</sub>CrFeNi<sub>1+x</sub> High-Entropy Alloys |
| title_full | Effects of the Replacement of Co with Ni on the Microstructure, Mechanical Properties, and Age Hardening of AlCo<sub>1−x</sub>CrFeNi<sub>1+x</sub> High-Entropy Alloys |
| title_fullStr | Effects of the Replacement of Co with Ni on the Microstructure, Mechanical Properties, and Age Hardening of AlCo<sub>1−x</sub>CrFeNi<sub>1+x</sub> High-Entropy Alloys |
| title_full_unstemmed | Effects of the Replacement of Co with Ni on the Microstructure, Mechanical Properties, and Age Hardening of AlCo<sub>1−x</sub>CrFeNi<sub>1+x</sub> High-Entropy Alloys |
| title_short | Effects of the Replacement of Co with Ni on the Microstructure, Mechanical Properties, and Age Hardening of AlCo<sub>1−x</sub>CrFeNi<sub>1+x</sub> High-Entropy Alloys |
| title_sort | effects of the replacement of co with ni on the microstructure mechanical properties and age hardening of alco sub 1 x sub crfeni sub 1 x sub high entropy alloys |
| topic | high-entropy alloy microstructure mechanical properties age hardening |
| url | https://www.mdpi.com/1996-1944/14/10/2665 |
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