Equation of State for Ti-Beta-21S

ORAL

Abstract

A new, tabular, SESAME equation of state is presented for Ti-Beta-21S (TIMETAL 21S{\textregistered}), a high-strength, high-temperature, beta-stabilized alloy of Ti, Mo, Nb, and Al. The new equation of state combines an empirical, Vinet description of the cold curve with the Johnson ionic model and the Thomas-Fermi-Dirac model for the thermal electronic contributions. Both the HCP and BCC phases are accounted for via the cold curve. Predictions for the room-temperature isotherm, principal Hugoniot, and thermal expansion are compared to new experimental results.

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Authors

  • Kevin Honnell

    • Los Alamos National Laboratory

  • Nenad Velisavljevic

    • Los Alamos National Laboratory
    • Los Alamos National Lab

  • Chris Adams

    • Los Alamos National Laboratory

  • Paulo Rigg

    • Los Alamos National Laboratory
    • Los Alamos National Lab

  • Neal Chesnut

    • Los Alamos National Laboratory
    • Los Alamos National Lab

  • Robert Aikin, Jr.

    • Los Alamos National Laboratory

  • Jonathan Boettger

    • Los Alamos National Laboratory