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Shock loading-release is performed on the porous aluminum with micropore and porosity m=1.04. Time-resolved interfacial velocity between the porous aluminum and LiF window is measured with diatance interferometer system for any reflector (DISAR) under five pressures ranging from 53 GPa to 99 GPa . From the interfacial velocity, the Euler longitudinal sound velocities under five pressures and the bulk sound velocities under 53 GPa, 72 GPa and 91 GPa are obtained. The melting pressure of the material is about 81 GPa. The poisson ratio before shock melting is about 0.37. From the analysis, the existence of the micropore in the material reduces the the shock melting obviously. So, its induced anharmonic effect cannot be neglected. Considering anharmonic effect into the equation of state, the anharmonic parameter is calculated to be about 30.
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Keywords:
- low porosity /
- aluminum /
- sound velocity /
- shock melting
[1] Erhart P, Bringa E M, Kumar M 2005 Phys. Rev. B 72 052104
[2] Burakovsky L, Preston D L, Silbar R R 1999 Phys. Rev. B 61 15011
[3] Burakovsky L, Preston D L, Silbar R R 2000 J. App. Phys. B 88 6294
[4] Gomez L, Dobry A, Diep H T 2001 Phys. Rev. B 63 224103
[5] Lutsko J F, Wolf D, Phillpot S R 1989 Phys. Rev. B 40 2841
[6] Agrawal P M 2003 J. Chem. Phys. 118 9680
[7] Kubota A, Reisman D B, Wolfer W G 2006 Appl. Phys. Lett. 88 241924
[8] Tang W H, Zhang R Q 1999 Equation of state theory and calculation conspectus (Hunan:National University of Defense Technology Press) p517 (in Chinese) [汤文辉、张若棋 1999 物态方程理论及计算概论(湖南:国防科技大学出版社)]
[9] Royce E B 1971 GRAY, A Three-phase Equation of State for Metals. UCRL-51121
[10] Xu X S, Zhang W X 1986 Introduction to practical equation of state theory (Beijing:Science Press) p517 (in Chinese) [徐锡申、张万箱 1986 实用物态方程理论导引(北京:科学出版社)]
[11] Jeong J W, Lee I H, Chang K J 1999 Phys. Rev. B 59 329
[12] Jing F Q 1999 Introduction to experimental equation of state (Beijing:Science Press) p191 (in Chinese) [经福谦 1999 实验物态方程导引(北京:科学出版社)第191页]
[13] Asay J R, Chhabildas L C High pressure strength of shocked aluminum. SAND-85-0157C
[14] Song P, Zhou X M, Unpublished. (in Chinese) [宋 萍、周显明 数据尚未发表]
[15] McQueen R G, Fritz J N and Morris C E 1983 in Shock Waves in Condensed Matter p95
[16] Stanley P M 1980 LASL Shock Hugoniot Data (Univercity of California Press) p166
[17] Song P, Cai L C 2009 Acta Phys. Sin. 58 1879 (in Chinese) [宋 萍、蔡灵仓 2009 58 1897]
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[1] Erhart P, Bringa E M, Kumar M 2005 Phys. Rev. B 72 052104
[2] Burakovsky L, Preston D L, Silbar R R 1999 Phys. Rev. B 61 15011
[3] Burakovsky L, Preston D L, Silbar R R 2000 J. App. Phys. B 88 6294
[4] Gomez L, Dobry A, Diep H T 2001 Phys. Rev. B 63 224103
[5] Lutsko J F, Wolf D, Phillpot S R 1989 Phys. Rev. B 40 2841
[6] Agrawal P M 2003 J. Chem. Phys. 118 9680
[7] Kubota A, Reisman D B, Wolfer W G 2006 Appl. Phys. Lett. 88 241924
[8] Tang W H, Zhang R Q 1999 Equation of state theory and calculation conspectus (Hunan:National University of Defense Technology Press) p517 (in Chinese) [汤文辉、张若棋 1999 物态方程理论及计算概论(湖南:国防科技大学出版社)]
[9] Royce E B 1971 GRAY, A Three-phase Equation of State for Metals. UCRL-51121
[10] Xu X S, Zhang W X 1986 Introduction to practical equation of state theory (Beijing:Science Press) p517 (in Chinese) [徐锡申、张万箱 1986 实用物态方程理论导引(北京:科学出版社)]
[11] Jeong J W, Lee I H, Chang K J 1999 Phys. Rev. B 59 329
[12] Jing F Q 1999 Introduction to experimental equation of state (Beijing:Science Press) p191 (in Chinese) [经福谦 1999 实验物态方程导引(北京:科学出版社)第191页]
[13] Asay J R, Chhabildas L C High pressure strength of shocked aluminum. SAND-85-0157C
[14] Song P, Zhou X M, Unpublished. (in Chinese) [宋 萍、周显明 数据尚未发表]
[15] McQueen R G, Fritz J N and Morris C E 1983 in Shock Waves in Condensed Matter p95
[16] Stanley P M 1980 LASL Shock Hugoniot Data (Univercity of California Press) p166
[17] Song P, Cai L C 2009 Acta Phys. Sin. 58 1879 (in Chinese) [宋 萍、蔡灵仓 2009 58 1897]
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