| 摘要 |
PURPOSE:To obtain an Al alloy having much superior superplasticity and fit for severer working conditions as compared with JIS5083 alloy without deteriorating the superior characteristics of the JIS5083 alloy by incorporating prescribed amounts of Cu and Be into the JIS5083 alloy. CONSTITUTION:This Al alloy consists, by weight, 3.5-6% Mg, one or more among 0.1-1% Mn, 0.05-0.35% Cr and 0.03-0.25% Zr, 0.12-2% Cu, 0.0001- 0.005% Be and the balance Al. The alloy may further contain one or more among 0.01-0.25% Ti, 0.0001-0.1% B, 0.01-0.2% each of V, Nb and Ta, 0.01- 0.5% each of Ni and W, 0.01-0.2% Mo, 0.01-0.10% Hf, 0.25-1.5% Zn, 0.01- 0.25% rare earth element and 0.01-0.5% each of Ge, Bi, Ag, Li, Sn, Sb and Cd by <=1.0% in total in case where the alloy does not contain Zn. |
