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
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Kevin Honnell
Los Alamos National Laboratory
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Nenad Velisavljevic
Los Alamos National Laboratory, Los Alamos National Lab
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Chris Adams
Los Alamos National Laboratory
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Paulo Rigg
Los Alamos National Laboratory, Los Alamos National Lab
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Neal Chesnut
Los Alamos National Laboratory, Los Alamos National Lab
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Robert Aikin, Jr.
Los Alamos National Laboratory
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Jonathan Boettger
Los Alamos National Laboratory