Oligocrystalline microstructure in an additively manufactured biocompatible Ti-Nb-Zr-Ta alloy

Autor(es)

Batalha, Rodolfo Lisboa ^{[1, 2]} ; Pauly, Simon ^{[1, 3]} ; Kuhn, Uta ^[1] ; Kosiba, Konrad ^[1] ; Bolfarini, C. ^{[2, 4]} ; Kiminami, Claudio Shyinti ^{[2, 4]} ; Gargarella, Piter ^{[2, 4]}

Afiliação do(s) autor(es)

^[1] Leibniz Inst Solid State & Mat Res, Inst Complex Mat, Dresden - Germany

^[2] Univ Fed Sao Carlos, Grad Program Mat Sci & Engn, Sao Carlos - Brazil

^[3] Univ Appl Sci Aschaffenburg, Fac Engn, Aschaffenburg - Germany

^[4] Univ Fed Sao Carlos, Dept Mat Engn, Sao Carlos - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Materials Letters; v. 262, MAR 1 2020.
• Citações Web of Science: 0

Resumo

Oligocrystalline materials exhibit large grains typically spanning the entire sample in one dimension, which strongly reduces the area covered by grain boundaries. This microstructure increases the pseudoelasticity, fatigue lifetime and ductility of shape memory alloys. In this paper, we demonstrate a new processing route for obtaining parts with complex geometries and oligocrystalline microstructure in biocompatible Ti-35Nb-7Zr-5Ta alloy by combining additive manufacturing and heat treatment. Oligocrystallinity has a pronounced effect on the recoverable strain during uniaxial compression. This processing route is applicable to different types of alloys and allows the production of oligocrystalline parts with complex shapes and advanced functional properties. (C) 2019 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 17/27031-4 - Influência de parâmetros de processo nas características metalúrgicas de peças fabricadas por manufatura aditiva
• Beneficiário: Piter Gargarella
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• 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