GENERATION AND CONSOLIDATION OF GAS-ATOMI ZED MAGNESIUM ALLOY POWDERS

Gas atomization as a rapid solidification technique can be used for th e production of magnesium powders with median particle sizes about 30 mum and narrow size distribution. The pow er produced exhibit cellular or dendritic structures with strong solid-solution supersaturation. T he powders were consolidated by extrusion to dense rod material. Fined isperse and homogenous structures with good mechanical properties were achived. A tensile yield strength up to 390 MPa and a compression yie ld strength of about 520 MPa were measured for Mg-Ca- and Mg-Al-Co-all oys.