Abstract
In this work, the Mg17Al12 phase was successfully synthesized by the Bulk Mechanical Alloying (BMA), based on repeating compression and extrusion cycles in a metallic die. After 2000 cycles of compression and extrusion, nano-structural Mg17Al12 phase was obtained in molded bulk shape. X-ray diffraction (XRD), scanning electron microscopy with energy dispersive X-ray (SEM-EDX) and differential scanning calorimetry (DSC) analyses were carried out to determine the morphology, phase structure of BMA-ed samples. The qualitative and quantitative analysis of phase abundance, evolution of microstructure and distribution of particles size were studied. It was shown that the Mg17Al12 alloy is able to absorb a large amount of hydrogen, higher than 3 mass% of Hydrogen. [doi:10.2320/matertrans.MRA2008155]
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