Thermomechanical treatments influence on the phase composition, microstructure, and selected mechanical properties of Ti-20Zr-Mo alloys system for biomedical applications

被引:38
|
作者
Kuroda, P. A. B. [1 ,2 ]
Lourenco, M. L. [1 ,2 ]
Correa, D. R. N. [2 ,3 ]
Grandini, C. R. [1 ,2 ]
机构
[1] Univ Estadual Paulista, UNESP, Lab Anelasticidade & Biomat, BR-17033360 Bauru, SP, Brazil
[2] Inst Biomat Tribocorros & Nanomed, IBTN Br, Brazilian Branch, BR-17033360 Bauru, SP, Brazil
[3] IFSP Fed Inst Educ Sci & Technol Sao Paulo, Grp Pesquisa Mat Metal Avancados, BR-18095410 Sorocaba, SP, Brazil
基金
巴西圣保罗研究基金会;
关键词
Ti alloys; Metallic biomaterial; Thermomechanical treatments; Microstructure; Mechanical properties; NB-ZR ALLOYS; TI-15ZR-MO ALLOYS; TITANIUM-ALLOYS; OMEGA-PHASE; TI; BEHAVIOR; TA; BIOCOMPATIBILITY; DESIGN;
D O I
10.1016/j.jallcom.2019.152108
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The study and development of new titanium alloys aim to place a metallic biomedical device with better mechanical compatibility with the bone, that is, with a smaller Young's modulus, on the market, to improve its application in the orthopedic and dental fields. This study analyzed the influence of thermomechanical treatments on the structure, hardness, and elastic modulus of the Ti-20Zr-Mo ternary alloy system, where the molybdenum content varied between 0 and 10 wt%. The treatments performed in this study involved homogenization, hot-rolling, and annealing. The structural and microstructural analyses were performed by X-ray diffraction, optical and scanning electron microscopy. An analysis of the mechanical properties of the alloy was obtained by measuring Vickers microhardness and the dynamic elastic modulus. The structural and microstructural results indicated that the Ti-20Zr alloy has only the alpha' phase, the Ti-20Zr-10Mo alloy had a predominance of beta phase, and the other alloys were alpha+beta types. The hardness increased due to solid-state hardening with the increase of the molybdenum content and due to hot-rolling processing, which increased the internal stresses of the material. The elastic modulus decreased with higher levels of molybdenum and the hot-rolling processing, due to beta phase stabilization. The other treatments increased the elastic modulus and may even induce the formation of the omega phase in some alloys of the system. (C) 2019 Elsevier B.V. All rights reserved.
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页数:7
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