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ALUMINUM ALLOY INGOT FOR PLASTIC WORKING, METHOD FOR PRODUCING ALUMINUM ALLOY INGOT FOR PLASTIC WORKING, METHOD FOR PRODUCING ALUMINUM ALLOY PLASTIC WORKED PRODUCT AND ALUMINUM ALLOY PLASTIC WORKED PRODUCT
ALUMINUM ALLOY INGOT FOR PLASTIC WORKING, METHOD FOR PRODUCING ALUMINUM ALLOY INGOT FOR PLASTIC WORKING, METHOD FOR PRODUCING ALUMINUM ALLOY PLASTIC WORKED PRODUCT AND ALUMINUM ALLOY PLASTIC WORKED PRODUCT
PROBLEM TO BE SOLVED: To provide an aluminum alloy ingot which has improved strength, and in which recrystallized grains are hardly generated.;SOLUTION: The aluminum alloy ingot for plastic working has a composition containing, by weight, 0.8 to 1.2% Mg, 0.7 to 1.0% Si, 0.3 to 0.65% Cu, 0.14 to 0.3% Mn, 0.14 to 0.3% Cr, ≤0.5% Fe, 0.01 to 0.15% Ti and 0.0001 to 0.03% B, and has a structure in which the average grain size of crystallized products is ≤8 μm, spacing between dendrite secondary arms is ≤40 μm, and also, the crystal grain size is ≤300 μm.;COPYRIGHT: (C)2002,JPO
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