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논문 기본 정보

자료유형
학술저널
저자정보
Samrat Tamuly (Indian Institute of Technology Guwahati) Saurabh Dixit (Mishra Dhatu Nigam Limited) Boopathy Kombaiah (Idaho National Laboratory) Prasenjit Khanikar (Indian Institute of Technology Guwahati)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.29 No.1
발행연도
2023.1
수록면
81 - 94 (14page)
DOI
10.1007/s12540-022-01211-x

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초록· 키워드

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An iron-rich high entropy alloy Al0.65CoCrFe2Nicomprising of both FCC and BCC phases was designed and fabricated usinginduction melting at a large industrial scale and suction casting at a small lab scale. Spinodally decomposed interdendriticregions were uniformly distributed in the industrially melted alloy, and a finer dendritic structure with smaller sized spinodalstructures was observed in the alloy suction cast at lab scale. The suction cast alloy fabricated at the lab scale exhibitedsignificantly higher compressive yield strength compared to the industrially cast alloy. The relative strengthening contributionsin the alloys due to solid solution, grain boundary, dislocation interactions and interphase boundary were analyzed. Dislocation hardening was the major contributor responsible for the higher strength of the SC alloy. The deformation behaviorin the alloys was examined with the help of orientation image mapping. Intense slip band formation at large strains in theindustrially melted alloy indicates that cold working can be an effective technique to enhance the strength of the dual-phasehigh entropy alloy processed at a large scale.

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