STUDY ON MORPHOLOGY AND MECHANICAL PROPERTIES OF STOICHIOMETRICALLY DEVELOPED AL-CU-MG CAST ALLOY

The present study was carried out to investigate the mechanical properties of newly developed cast aluminum alloy with the (1.0 at. %) of copper and (1.0 at. %) magnesium addition in the mole ratio of 1:1:1 of Al-Cu-Mg in as - cast and thermally aged conditions. The atomic weight (at. %) selection of Cu-Mg on the basis of stoichiometric calculations, 1 unit (at. %) of copper and 1 unit (at. %) of magnesium preheated at 200C were mixed in liquid aluminium base material, heated in an electric furnace and melting temperature was kept at 750C for about 10 min alone and this melt was hold at 7300C with alloying additions of copper and magnesium for about 30 min to ensure complete homogenisation, Further, this liquidous aluminium metal matrix was stirred at 800 rpm for five minutes and poured at temperature 7000C 10 0C in permanent mild steel mould preheated at 2000C in order to achieve as- cast aluminium alloy.