Evaluation of a new concept for semi-solid magnesium billet forming

A new concept of using a ternary eutectic for semi-solid magnesium billet forming was evaluated. Magnesium ZC63 alloy showed that the presence of only 16% liquid facilitated metal forming at low pressures and temperatures in the semi-solid state. It was also shown that the amount and composition of the liquid rich in alloying elements did not change significantly with temperature. This feature will alleviate the problems caused by excessive oxidation of magnesium during reheating and handling of billets. The new concept also provides a basis for designing new alloys exclusively suited for semi-solid billet forming.