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Evaluation of the mechanical properties of powder metallurgy Ti-6Al-7Nb alloy.

Abstract：

:Titanium and its alloys are common biomedical materials owing to their combination of mechanical properties, corrosion resistance and biocompatibility. Powder metallurgy (PM) techniques can be used to fabricate biomaterials with tailored properties because changing the processing parameters, such as the sintering temperature, products with different level of porosity and mechanical performances can be obtained. This study addresses the production of the biomedical Ti-6Al-7Nb alloy by means of the master alloy addition variant of the PM blending elemental approach. The sintering parameters investigated guarantee that the complete diffusion of the alloying elements and the homogenization of the microstructure is achieved. The sintering of the Ti-6Al-7Nb alloy induces a total shrinkage between 7.4% and 10.7% and the level of porosity decreases from 6.2% to 4.7% with the increment of the sintering temperature. Vickers hardness (280-300 HV30) and tensile properties (different combination of strength and elongation around 900MPa and 3%) are achieved.

journal_name

J Mech Behav Biomed Mater

journal_title

Journal of the mechanical behavior of biomedical materials

authors

Bolzoni L,Ruiz-Navas EM,Gordo E

doi

10.1016/j.jmbbm.2016.12.005

subject

Has Abstract

pub_date

2017-03-01 00:00:00

pages

110-116

eissn

1751-6161

issn

1878-0180

pii

S1751-6161(16)30423-4

journal_volume

67

pub_type

杂志文章

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