Some features of temperature and strain rate sensitivity dependences of plastic flow of functional magnesium alloys

Abstract

The paper presents the results of mechanical tests of promising magnesium alloys for medical use of ternary alloying systems Mg-Zn-Ca and Mg-Zn-Y. The temperature and strain rate sensitivity features of the loading curves are discussed, in particular, the simultaneous significant increase in plasticity and a decrease in the interval of stable plastic flow with increasing temperature. The experimentally obtained value of the activation energy of the dislocation annihilation will make it possible to predict the true plastic deformation corresponding to the point of loss of plastic flow stability at various temperatures. The prospects for the possible use of the obtained results in technological processes for the manufacture and operation of medical devices are discussed.