Basic characterization of new Ti-Mn-Zr alloys

Abstract

Beta titanium alloys (ß-Ti) have been a subject of great interest since the 1980s. In this study, the microstructure, mechanical and corrosion behavior of new low-cost ß-type Ti-14Mn-xZr (x = 0, 3 and 6 wt%) alloys are studied. The novel alloys were fabricated by arc melting followed by annealing treatments at 900 °C for 6 hrs then quenched in ice water to achieve good homogenization. The microstructure, mechanical properties, and corrosion properties of the alloys were investigated. The XRD patterns show a single ß phase in all alloys and confirmed by the microstructural analyses. Both the compression strength and the hardness of the alloys were increased by increasing the Zr-content in the alloy due to the solid solution strengthening as well as the higher ß-phase stability. Also, Zr addition decreased the corrosion rate of TiMnZr alloys.