On the ternary eutectic reaction in the Fe60Cr8Nb8B24 quaternary alloy

Autor(es)

Guo, Y. ; Moreira Jorge, Jr., A. ; Kiminami, C. S. ; Bolfarini, C. ; Botta, W. J.

• Tipo de documento: Artigo Científico
• Fonte: Journal of Alloys and Compounds; v. 707, p. 281-286, JUN 15 2017.
• Citações Web of Science: 1

Resumo

Recently a Fe60Cr8Nb8B24 quaternary amorphous/nanocrystalline composite coating has been successfully synthesized by high velocity oxygen fuel in our group. The composite coating shows excellent wear and corrosion resistance. In order to understand the phase evolution of the quaternary alloy during cooling and interpret its good glass forming ability, the stable phases in the as-melted ingot of the same composition were studied by X-Ray diffraction, scanning electron microscopy, transmission electron microscopy and differential scanning calorimetry. Thermodynamic calculation was performed based on a database compiled from literature. The calculated results show good agreement with the microstructural observation. It was found that Fe60Cr8Nb8B24 alloy lies very close to the eutectic point of the system, which is related to its high glass forming ability. The thermodynamic calculation could provide insightful understanding and guidance for the future amorphous composition designing in Fe-Cr-Nb-B quaternary system. (C) 2016 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 13/05987-8 - Processamento e caracterização de ligas metálicas amorfas, metaestáveis e nano-estruturadas
• Beneficiário: Claudio Shyinti Kiminami
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 14/22112-8 - Produção e caracterização estrutural, mecânica e eletroquímica de recobrimentos metálicos produzidos por aspersão térmica utilizando ligas amorfizáveis do sistema Fe-Cr-Nb-B.
• Beneficiário: Yaofeng Guo
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado