Effect of heat treatment and plastic deformation on the structure and elastic modulus of a biocompatible alloy based on zirconium and titanium

Abstract

Transmission electron microscopy and X-ray diffraction analysis have been used to study the phase composition and structure of an IMP-BAZALM (Zr-31Ti-18Nb (at %)) biocompatible medical alloy depending on the heat-treatment conditions. An interrelation between the values of the electron concentration of phases normalized to the volume (e/a norm = e/a alloy(ν β/ν phase)) and the phase composition of the alloy has been found to exist. It has been established that the appearance of the α'' and ω phases in the structure of the alloy leads to an increase in the modulus of elasticity. The greatest increase in the modulus is observed under the conditions corresponding to the formation of the ω phase. © Pleiades Publishing, Ltd., 2012.