Effect of Zr Concentration on the Microstructure and Mechanical Performance of Porous Ti-Zr System by Powder Metallurgy

Abstract

In this study, porous binary Ti-(x)Zr alloys of nominal Zr contents (x=10, 20 and 30 at. %) with differing porosities were manufactured, using powder metallurgy with compaction conducted under a pressure of 300MPa and sintering at 1200 °C for 6 h. A space holder agent was employed to control the general porosity. The microstructures were characterized by scanning electron microscopy and energy dispersed spectroscopy. The phase constitution was done by X-ray diffractometer. Uniaxial compressive tests were performed to determine the mechanical behaviors. Microstructural studies revealed macro/micro pores generated were mostly irregularly shaped with a uniform pore size distribution in all Ti-(x)Zr (at. %) alloys. The finer microstructure was obtained with increasing Zr contents. The mechanical performances of the porous Ti-(x)Zr (at. %) binary systems were strongly influenced by Zr and general porosity.

Effect of Zirconium Addition on Microstructure and Properties of Pure Ti Produced by Powder Metallurgy

“…However, it can be observed that the micrograph of the Ti-15Zr alloy has finer lamellae structure of grains compared to the CP-Ti sample. Consequently, increasing Zr concentration led to refine the grains; the microstructure of Ti-Zr system was extremely sensitive to Zr content (Eyyup et al, 2022). Also, for Ti-15Zr…”