ALUMINIUM ALLOYS HAVING MECHANICAL PROPERTIES AND WORKABILITY AND METHOD OF MAKING SAME

摘要

1506425 Al-Si alloy HITACHI Ltd 7 April 1975 [20 April 1974] 14211/75 Heading C7A An Al-Si alloy of composition:- Sr, Na, P optionally present wherein the entectic silicon is present in the form of tabular crystals mean width not more than 5Ám. The alloy may be produced by continuous casting at a cooling rate of at least 10‹C/second and may be hot or cold worked, annealed for one hour at 350‹C- 430‹C to spheroidize the entectic silicon and optionally solution treated and aged.