Al as a simple solid: High pressure study to 220 GPa (2.2 Mbar)

• Published in: Physical review letters Vol. 73; no. 15; pp. 2075 - 2078
• Main Authors: Greene, RG, Luo, H, Ruoff, AL
• Format: Journal Article
• Language: English
• Published: United States 10-10-1994
• Subjects: 360102 - Metals & Alloys- Structure & Phase Studies; ALUMINIUM; COHERENT SCATTERING; CRYSTAL-PHASE TRANSFORMATIONS; DIFFRACTION; ELEMENTS; EQUATIONS; EQUATIONS OF STATE; MATERIALS SCIENCE; METALS; PHASE TRANSFORMATIONS; PRESSURE DEPENDENCE; SCATTERING; SHOCK WAVES; SOUND WAVES; ULTRASONIC WAVES; VERY HIGH PRESSURE; VOLUME; X-RAY DIFFRACTION
• ISSN: 0031-9007; 1079-7114
• DOI: 10.1103/physrevlett.73.2075

The static equation of state of Al has been measured to 220 GPa, corresponding to a compression of [ital V]/[ital V][sub 0]=0.50. No phase transformation from the fcc to hcp phase was observed. The equation of state fits the [ital H]11 form for a simple solid as defined by W. B. Holzapfel [Phys. Rev. B 48, 767 (1993)] with no free parameters. These results are also consistent with recent shock data on Al to a pressure of 1 TPa ([ital V]/[ital V][sub 0]=0.30) [Phys. Rev. Lett. 60, 1414 (1988)]. The ultrasonic, static, and shock, equations of state of Al are reconciled and compared to theoretical predictions.