Experimental determination of liquidus projection in the Cr rich region of the Cr-Si-B system

Autor(es)

Chad, V. M. ^[1] ; Chaia, N. ^[2] ; Villela, T. F. ^[3] ; Nunes, C. A. ^[2] ; Coelho, G. C. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Fed Mato Grosso, Inst Ciencias Agrarias & Tecnol, Rodovia Rondonopolis Guiratinga, Km 06, MT-270, BR-78735901 Rondonopolis, MG - Brazil

^[2] Univ Sao Paulo, Escola Engn Lorena, Polo Urboind Gleba AI-6, BR-12602810 Sao Paulo - Brazil

^[3] Univ Fed Fluminense, Escola Engn Ind Met Volta Redonda, Rio De Janeiro - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Alloys and Compounds; v. 772, p. 735-739, JAN 25 2019.
• Citações Web of Science: 0

Resumo

In this work, the Cr-rich region of the Cr-Si-B system have been experimentally investigated on arc-melted alloys in order to build the liquidus projection. The determination of the liquid-solid equilibria has been based on microstructural characterization of the as-cast alloys by using scanning electron microscopy and X-rays diffraction. Six primary solidification regions associated to the alloys were identified: Cr-ss, Cr2B, Cr3Si, Cr5B3, Cr5Si3 and CrB. Two ternary type II invariant reactions were identified: Liq+Cr5B3 <-> Cr3Si+Cr2B and Liq+CrB <-> Cr5B3+Cr5Si3 designated by II1 and II2, respectively. Two ternary eutectics I-1 and I-2 corresponding, respectively, to Liq <-> Cr-ss+Cr2B+Cr3Si and Liq <-> Cr5Si3+Cr5B3+Cr3Si were also proposed. (C) 2018 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 04/12328-1 - Avaliação experimental da seção isotérmica a 1200 c e determinação da projeção liquidus na região rica em Cr do sistema Cr-Si-B
• Beneficiário: Carlos Angelo Nunes
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 06/07003-1 - Modelgem termodinâmica do sistema Cr-Si-B
• Beneficiário: Gilberto Carvalho Coelho
• Modalidade de apoio: Auxílio à Pesquisa - Regular