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Microstructure evolution and strengthening by cold rolling of CrMnFeCoNi high-entropy alloy processed by spray forming

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Autor(es):
Sousa, G. H. ; Zepon, G. ; Mazzer, E. M.
Número total de Autores: 3
Tipo de documento: Artigo Científico
Fonte: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING; v. 793, p. 9-pg., 2020-08-19.
Resumo

High-entropy alloys (HEAs) are defined as alloys containing five or more major elements in atomic fractions ranging from 5 to 35%at. Despite the presence of a large number of components, CrMnFeCoNi HEAs show simple FCC crystal structure.This work reports the effects of cold rolling on the final microstructure and the mechanical properties of a CrMnFeCoNi HEA processed by spray forming and deformed to 30, 50, 90 and 146% of true strain. The results presented an alloy with excellent workability and exhibited a large work hardening capacity in cold rolling. It is concluded that the main deformation and hardening mechanisms during cold work are associated with the nanotwinning deformation of this alloy. (AU)

Processo FAPESP: 15/25077-1 - Conformação por spray de ligas de alta entropia
Beneficiário:Guilherme Zepon
Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado