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Acoustic velocities, elastic constants and thermodynamic parameters upon pressure up to 2 GPa of typical Zr 41 Ti 14 Cu 12.5 Ni 10 Be 22.5 bulk metallic glass (BMG) have been studied by using a pulse echo overlap method. The results indicate that the glass forming ability (GFA) has a relation with the elastic constants...
Using pulse echo overlap measurement, the elastic behavior of amorphous carbon has been studied at ambient and low temperatures. The smaller ratio B/G of the bulk modulus to shear modulus and smaller Poisson's ratio σ at room temperature indicate that there is an intrinsic stiffening of transverse acoustic phonons in the amorphous carbon. The acoustic velocity and attenuation for longitudinal modes...
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