The formation of B2-precipitate and its effect on grain growth behavior in aluminum-containing CoCrNi medium-entropy alloy
| Autor: | Hyung Jun Kim, Hyeonseok Cho, Boris B. Straumal, Dongyoung Kwen, Nokeun Park, Yoonseong Koo, Yejin Kim, Eunjin Kim, Hyomin Kim, Myeonghyeon Jang, Maya Putri Agustianingrum, Donghee Lee |
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| Rok vydání: | 2021 |
| Předmět: |
Diffraction
Materials science Condensed matter physics Zener pinning Annealing (metallurgy) Mechanical Engineering Alloy chemistry.chemical_element Electron engineering.material Condensed Matter Physics Grain growth chemistry Mechanics of Materials Aluminium engineering Particle General Materials Science |
| Zdroj: | Materials Letters. 303:130481 |
| ISSN: | 0167-577X |
| Popis: | B2-precipitate formation in Al7.45(CoCrNi)92.55 (at.%) was investigated after two-stage annealing. Prior face-centered cubic (FCC) grain growth has been successfully controlled using the pinning effect of B2-precipitate. Electron backscattered diffraction analysis was utilized to study the preferential growth direction of B2-precipitate during the second-annealing process. B2-precipitate as the partially coherent particle, exhibited Kurjumov-Sachs orientation relationship (OR) with FCC matrix in {1 1 1}FCC//{1 1 0}B2 plane and 〈1 1 0〉FCC//〈1 1 1〉B2 direction. This orientation relationship altered the interface of B2-precipitate and FCC grain. The matched OR between B2-precipitate and FCC grain was effectively hindered the grain growth of FCC grain by giving the Zener pinning pressure. |
| Databáze: | OpenAIRE |
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