| Bulk metallic glasses Zr41Ti14Cu13Ni10Be22 are prepared by remelting and casting in an argon-arc furnace, and then sealed into quartz tubes with hydrated B2O3 in argon atmosphere or vacuum. They are heated to 950℃and hold the temperature for 30 mins, and quenched to form Zr-based amorphous metallic foam.The micro-mechanism and thermodynamics properties of Zr-based amorphous metallic foam were analyzed by the results of X-ray diffraction, Metallographic microscope, the Rockwell sclerometer, Gleeble-3500 thermal and mechanical instrument and differential scanning calorimetry.X-ray diffraction analysis confirms the amorphous nature of the foam which is sealed in the 15mm inside diameter quartz tube at 1.0 bar argon. Homogeneous foams were obtained and the foam densities are as low as 5.45g/cm3 with a bubble volume fraction of 14.4%. Research results show that the Rockwell hardness of amorphous metallic foam is 49.2, compared to 53 for the Zr-based bulk metallic glass. According to the Kissinger equation, the glass transformation activation energy is 143.90kJ/mol. The first and second crystallization activation energies of amorphous metallic foam are Ep1=82.73kJ/mol and Ep2=312.20kJ/mol, respectively, while the first, second and three crystallization activation energies of Zr41Ti14Cu13Ni10Be22 bulk metallic glass are Ep1=193.60 kJ/mol, Ep2=278.52kJ/mol, Ep3=188.66kJ/mol, respectively. The results of Gleeble-3500 show that the deformation process of the compression of amorphous metallic foam in room temperature belongs to plastic deformation. Its compression strength is 75MPa which is much smaller than that of Zr-based Bulk metallic glasses.
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