Low temperature heat treatments on Ti-15Zr-xMo alloys

Autor(es)

Xavier, Caio Castanho ^{[1, 2]} ; Nespeque Correa, Diego Rafael ^{[1, 2]} ; Grandini, Carlos Roberto ^{[1, 2]} ; Rocha, Luis Augusto ^{[1, 2, 3]}

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, UNESP, Fac Ciencias Bauru, Bauru, SP - Brazil

^[2] IBTN Br, Brazilian Branch, Inst Biomat Tribocorros & Nanomed, Bauru, SP - Brazil

^[3] Univ Minho, Ctr MicroElectroMech Syst, MEMS UMinho, Campus Azurem, Guimaraes - Portugal

• Tipo de documento: Artigo Científico
• Fonte: Journal of Alloys and Compounds; v. 727, p. 246-253, DEC 15 2017.
• Citações Web of Science: 6

Resumo

This paper regards the study of the effect of heat treatments on the microstructure and microhardness of Ti-15Zr-xMo alloys aimed to biomedical applications. The alloys were melted in an arc-furnace, with four different compositions in order to obtain samples with alpha', alpha'+beta and beta phase microstructures. The as-cast alloys exhibited a full lamellar structure for the Ti-15Zr, a bimodal structure composed by beta phase grains along with an alpha phase acicular structure at the grain boundaries for the Ti-15Zr-5Mo, predominant beta phase for the Ti-15Zr-10Mo and only beta phase for the Ti-15Zr-15Mo. Results showed that both micro-structure and mechanical properties of the studied alloys can be tailored by relatively low temperature heat treatments, as they resulted in the growth of the alpha' phase in all alloys. The formation of alpha' phase resulted in a decrease in the microhardness of the alloys. (C) 2017 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 10/20440-7 - Efeito de elementos substitucionais e intersticiais nas propriedades mecânicas e biocompatibilidade de ligas do sistema Ti-15Zr-xMo
• Beneficiário: Diego Rafael Nespeque Correa
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto