Metastable phase decomposition in as-cast Fe-Ni-Co alloys

Autor(es)

Paganotti, A. ^[1] ; Gama, S. ^[1] ; Silva, R. A. G. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Paulo, Lab Mat & Mech Mfg, Diadema, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Alloys and Compounds; v. 750, p. 554-559, JUN 25 2018.
• Citações Web of Science: 2

Resumo

The microstructures and the phase transitions of as-cast Fe-Ni-Co alloys were studied using different experimental techniques. The results showed that a solid solution is formed at room temperature and then it is decomposed during heating by the precipitation of the Fe3Ni phase. This Ni-rich phase precipitation process enriches the precipitate surrounding in Co atoms. The Co atoms then diffuses forming a concentration gradient. This process is enthalpy driven and dependent on the concentration of Fe, while the reaction temperatures are dependent on the concentrations of Ni and Co. (C) 2018 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 16/08583-3 - Estudo de ligas e nanoligas do sistema Fe-Ni-Co para aplicação em motores termomagnéticos
• Beneficiário: André Paganotti
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto