| 摘要 |
PURPOSE:To obtain Al alloy stock having a high Young's modulus, superior strength and toughness by adding specified amounts of Si, Cu, Ti and Mg to Al. CONSTITUTION:The composition of Al alloy stock is composed of by weight 0.2-12% Si, 0.8-5% Cu, 1-4% Ti, 0.3-3.5% Mg and the balance Al with inevitable impurities. Si is added so as to improve the Young's modulus and to strengthen the matrix by heat treatment in combination with Mg. Cu is added so as to improve the strength by the effect of heat treatment. Ti is added so as to improve the Young's modulus.
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