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

被引：13

作者：

Batalha, Rodolfo Lisboa ^{[1
,2
]}

Pauly, Simon ^{[2
,3
]}

Kuhn, Uta ^{[2
]}

Kosiba, Konrad ^{[2
]}

Bolfarini, C. ^{[1
,4
]}

Kiminami, Claudio Shyinti ^{[1
,4
]}

Gargarella, Piter ^{[1
,4
]}

机构：

[1] Univ Fed Sao Carlos, Grad Program Mat Sci & Engn, Sao Carlos, Brazil

[2] Leibniz Inst Solid State & Mat Res, Inst Complex Mat, Dresden, Germany

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

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

来源：

MATERIALS LETTERS | 2020年 / 262卷

基金：

巴西圣保罗研究基金会;

关键词：

beta-Ti biocompatible alloys; Oligocrystalline structure; Selective laser melting; MEMORY; SUPERELASTICITY;

D O I：

10.1016/j.matlet.2019.127149

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：3

共 12 条

[1]

[Anonymous], 2011, Mechanical Metallurgy

[2] Superelasticity in micro-scale shape memory ceramic particles [J].