한국주조공학회

In order to study the cast structure and mechanical properties of Al-10 % Mg alloy solidified under the various high hydraulic pressure, ranging from 0kgf/cm^2 to 2000㎏f/cm^2 , the relationship between the cooling rate and the cast structure was observed, and also the mechanical test and the measurement of the specific gravity were carried out. From this experiment, results were summerized as follows; 1. The cooling rate of the alloy increased with increase of the applied pressure. 2. The formation of the piping and the porosity in the castings was surpressed by applying the high hydraulic pressure. 3. The dendrite arm spacing decreased with increase of the applied pressure. 4. Mechanical properties and specific gravity increased with the increase of the applied pressure.