Phase equilibrium in the Cu-Ti-Zr system at 800°C

Abstract

The isothermal Cu-Ti-Zr phase diagram at 800°C was constructed by means of 36 equilibrated alloys. Electron microprobe analyses were used to determine the phase compositions and phase relationships. Most of the Cu-Zr binary intermetallic phases show a large Ti solubility and extend to the ternary region. CuTi2 and CuZr2 form a complete solid solution as a Cu(Ti,Zr)2 phase. One ternary phase, Cu2TiZr, formed at the central region. These phase relationships are quite different from the 703°C isotherm mainly determined by X-ray analysis. © 2007 The Japan Institute of Metals.