Equation of State for TI-BETA-21S

Conference · Thu Jan 10 00:00:00 EST 2008

DOI:https://doi.org/10.1063/1.2833146· OSTI ID:1009032

Honnell, Kevin G; Velisavljevic, Nenad; Adams, Chris D; Rigg, Paulo A; Chesnut, Gary N; Boettger, Jonathan C ^[1]

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1. LANL

A new, tabular, SESAME equation of state, along with new diamond-anvil, Hugoniot, and thermal-expansion data, is presented for Ti-Beta-21S (TIMETAL{reg_sign} 21S), a high-strength, high-temperature, beta-stabilized alloy of Ti, Mo, Nb, Al and Si. 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. Two coexisting phases, HCP ({alpha}) and BCC ({beta}), are observed at room temperature and pressure, with the {alpha} phase disappearing above 67 GPa. Predictions for the room-temperature isotherm, principal Hugoniot, thermal expansion, and heat capacity are compared to new and existing experimental results.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
• Sponsoring Organization: USDOE
• OSTI ID: 1009032
• Resource Relation: Conference: Compression of Condensed Matter;June 24 - 29, 2007;Waikoloa, Hawaii
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALLOYS
COMPRESSION
ISOTHERMS
SPECIFIC HEAT
THERMAL EXPANSION
THOMAS-FERMI MODEL