Influence of plastic deformation on the microstructure and corrosion behaviour of Ti-10Mo-4Zr and Ti-6Al-4V alloys in the Ringer's solution at 37 degrees C

摘要

The influence of plastic deformation on the microstructure and passivity of Ti-6Al-4V and Ti-10Mo-4Zr is studied. The content of titanium-based compounds in the passive film formed on the alloys increases under straining. In the region where necking occurs, the beta-phase content drops in Ti-6Al-4V. The grain orientation spread increases with increasing strain. The quality index of EBSD maps is affected on Ti-10Mo-4Zr (dislocation structures along preferential orientations). The corrosion behaviour is investigated in the Ringer's solution (37 degrees C). Results obtained in the anodic and cathodic domains are discussed considering changes described previously. (C) 2015 Elsevier Ltd. All rights reserved.