The effect of high pressure mid high strain on microstructure has been extensively investigated in recent if years, The research interest comes from metallurgy as well as from geophysics. Jeanloz at al. [1] reported that a peak pressure, which was achieved by a "multiple-reverberation" technique, turned a peridot disk into a shock-produced olivine glass. Armstrongs al. [2-3] investigated crystal size dependence on impact initiation of cyclotrirnethylenetrinitramine explosive. Sekhar el al. [4] developed a rapid pressure application technique for rapid solidification processing, which may make a melting alloy undercooled and rapidly solidified. Cowan [5] showed that a ordered Cu,Au was disordered above a supercritical shear stress in shock deformation.
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