부산대학교 도서관

The purpose of this study is to confirm the improvement of formability of AZ31magnesium alloy sheet by using local heating and cooling technique. For this, the experiments of warm deep drawing were done under the temperatures of 100°C~400°C , and the punch velocity of 10, 100mm/min. Also FE analysis under the temperatures of blankholder and die of 150°C, 225°C and 300°C for tools(holder and die) was executed with considering heat teansfer. From the results, the formability of AZ31magnesium alloy, espicially the temperatures of 225°C~250°C for tools(holder and die)improved remarkably. And the experiments and simulations showed that necking under room temperature for tools occured under the part of punch shoulder while at 300°C for tools, at the part of die shoulder.