Elasticity of {omega}-phase zirconium

Journal Article · Mon Oct 01 04:00:00 EDT 2007 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.76.144107· OSTI ID:21052710

Wei, Liu; Baosheng, Li; Liping, Wang ^[1]; Jianzhong, Zhang; Yusheng, Zhao ^[2]

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1. Mineral Physics Institute, Stony Brook University, Stony Brook, New York 11794 (United States)
2. LANSCE Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

Compressional (V{sub P}) and shear wave (V{sub S}) velocities as well as unit-cell volumes of the {omega} phase of Zr have been measured at high pressure (6.9-10.9 GPa) at room temperature using ultrasonic interferometry in conjunction with synchrotron x radiation. Both V{sub P} and V{sub S} as well as the adiabatic bulk (K{sub S}) and shear (G) moduli exhibit monotonic increase with increasing pressure. Using a finite strain equation of state approach, the elastic bulk and shear moduli and their pressure derivatives are derived from the directly measured velocities and densities, yielding K{sub S0}=104.0 (16) GPa, G{sub 0}=45.1 (9) GPa, K{sub S0}{sup '}=2.8 (2), and G{sub 0}{sup '}=0.6 (1) independent of pressure calibration. The low pressure dependence of K{sub S0} and G{sub 0} may be attributed to the pressure-induced progressive s-d electron transfer in the {omega}-Zr as suggested by previous Raman studies as well as static compressions at high pressure.

• OSTI ID: 21052710
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 14 Vol. 76; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DENSITY
ELASTICITY
ELECTRON TRANSFER
EQUATIONS OF STATE
INTERFEROMETRY
OMEGA BARYONS
PRESSURE RANGE GIGA PA
PRESSURE RANGE MEGA PA 10-100
SHEAR
SOUND WAVES
SYNCHROTRONS
TEMPERATURE RANGE 0273-0400 K
VELOCITY
X RADIATION
ZIRCONIUM