Evaluation of Mechanical Properties of Dental Casting Ti-Zr Based Alloys

Abstract

Mechanical properties of titanium-zirconium binary alloys were investigated in order to reveal their possibility for new biomedical materials. Useful data for alloy designing are collected through a tensile test and an optical microscopy. The strength of the alloys containing 25 to 75 atomic per cent zirconium is approximately three times as large as the strength of pure titanium and pure zirconium. These results consist wtih the results of other investifators and hardness test reported previously. Large elongation are obtained regardless of strengthening by a solid solution hardening and/or a precipitate hardening in the alloys having 25 to 75 atomic per cent zirconium content. From these reults, it is concluded that new alloys for biomedical materials should be designed as a titanium-zirconium base alloys.