Phase stability and the equation of state of the transition-metal alloy Mo-Re at high pressure

Academic Article

Abstract

  • The transition-metal alloy Mo-32 at. % Re was compressed in a diamond anvil cell to 193±8 GPa (volume fraction V/V0=0.721) and studied by x-ray diffraction using a synchrotron source. Copper was used as an internal pressure standard in the experiment. The bcc phase of this Mo-Re alloy was found to be stable to the highest pressure and the expected phase transformation to the hcp phase was not observed. The equation of state of the Mo-Re alloy is compared with its constituent metals. Mo-Re alloys show a rapid decrease in compressibility with increasing Re concentration. The rigid-band model for the alloy along with the first-principles theoretical calculations for pure Mo are not adequate to explain the experimental results. © 1993 The American Physical Society.
  • Authors

    Published In

    Digital Object Identifier (doi)

    Author List

  • Gu G; Vohra YK
  • Start Page

  • 11559
  • End Page

  • 11562
  • Volume

  • 47
  • Issue

  • 17