Effect of Cold Rolling on the Phase Transformation Kinetics of an Al<sub>0.5</sub>CoCrFeNi High-Entropy Alloy
The solid state phase transformation kinetics of as-cast and cold rolling deformed Al<sub>0.5</sub>CoCrFeNi high-entropy alloys have been investigated by the thermal expansion method. The phase transformed volume fractions are determined from the thermal expansion curve using the lever r...
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| Format: | Article |
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MDPI AG
2018-11-01
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| Series: | Entropy |
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| Online Access: | https://www.mdpi.com/1099-4300/20/12/917 |
| _version_ | 1811262364502196224 |
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| author | Jun Wang Haoxue Yang Tong Guo Jiaxiang Wang William Yi Wang Jinshan Li |
| author_facet | Jun Wang Haoxue Yang Tong Guo Jiaxiang Wang William Yi Wang Jinshan Li |
| author_sort | Jun Wang |
| collection | DOAJ |
| description | The solid state phase transformation kinetics of as-cast and cold rolling deformed Al<sub>0.5</sub>CoCrFeNi high-entropy alloys have been investigated by the thermal expansion method. The phase transformed volume fractions are determined from the thermal expansion curve using the lever rule method, and the deformed sample exhibits a much higher transformation rate. Two kinetic parameters, activation energy (<i>E</i>) and kinetic exponent (<i>n</i>) are determined using Kissinger⁻ Akahira⁻Sunose (KAS) and Johnson⁻Mehl⁻Avrami (JMA) method, respectively. Results show that a pre-deformed sample shows a much lower activation energy and higher kinetic exponent compared with the as-cast sample, which are interpreted based on the deformation induced defects that can promote the nucleation and growth process during phase transformation. |
| first_indexed | 2024-04-12T19:24:03Z |
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| id | doaj.art-7926788a03184c19be385b4ed6982fc8 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-04-12T19:24:03Z |
| publishDate | 2018-11-01 |
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| series | Entropy |
| spelling | doaj.art-7926788a03184c19be385b4ed6982fc82022-12-22T03:19:31ZengMDPI AGEntropy1099-43002018-11-01201291710.3390/e20120917e20120917Effect of Cold Rolling on the Phase Transformation Kinetics of an Al<sub>0.5</sub>CoCrFeNi High-Entropy AlloyJun Wang0Haoxue Yang1Tong Guo2Jiaxiang Wang3William Yi Wang4Jinshan Li5State 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, ChinaState 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, ChinaThe solid state phase transformation kinetics of as-cast and cold rolling deformed Al<sub>0.5</sub>CoCrFeNi high-entropy alloys have been investigated by the thermal expansion method. The phase transformed volume fractions are determined from the thermal expansion curve using the lever rule method, and the deformed sample exhibits a much higher transformation rate. Two kinetic parameters, activation energy (<i>E</i>) and kinetic exponent (<i>n</i>) are determined using Kissinger⁻ Akahira⁻Sunose (KAS) and Johnson⁻Mehl⁻Avrami (JMA) method, respectively. Results show that a pre-deformed sample shows a much lower activation energy and higher kinetic exponent compared with the as-cast sample, which are interpreted based on the deformation induced defects that can promote the nucleation and growth process during phase transformation.https://www.mdpi.com/1099-4300/20/12/917high-entropy alloyphase transformationkineticsdeformationthermal expansion |
| spellingShingle | Jun Wang Haoxue Yang Tong Guo Jiaxiang Wang William Yi Wang Jinshan Li Effect of Cold Rolling on the Phase Transformation Kinetics of an Al<sub>0.5</sub>CoCrFeNi High-Entropy Alloy Entropy high-entropy alloy phase transformation kinetics deformation thermal expansion |
| title | Effect of Cold Rolling on the Phase Transformation Kinetics of an Al<sub>0.5</sub>CoCrFeNi High-Entropy Alloy |
| title_full | Effect of Cold Rolling on the Phase Transformation Kinetics of an Al<sub>0.5</sub>CoCrFeNi High-Entropy Alloy |
| title_fullStr | Effect of Cold Rolling on the Phase Transformation Kinetics of an Al<sub>0.5</sub>CoCrFeNi High-Entropy Alloy |
| title_full_unstemmed | Effect of Cold Rolling on the Phase Transformation Kinetics of an Al<sub>0.5</sub>CoCrFeNi High-Entropy Alloy |
| title_short | Effect of Cold Rolling on the Phase Transformation Kinetics of an Al<sub>0.5</sub>CoCrFeNi High-Entropy Alloy |
| title_sort | effect of cold rolling on the phase transformation kinetics of an al sub 0 5 sub cocrfeni high entropy alloy |
| topic | high-entropy alloy phase transformation kinetics deformation thermal expansion |
| url | https://www.mdpi.com/1099-4300/20/12/917 |
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