发明名称 ALUMINUM ALLOY MEMBER AND METHOD OF MANUFACTURING THE SAME
摘要 PROBLEM TO BE SOLVED: To provide an aluminum alloy member excellent in impact resistance.SOLUTION: An aluminum alloy member comprises hypoeutectic aluminum alloy constituted by metallic structure having a base part composed of α-Al and a crystallized part composed of the crystallized product except the α-Al. An abundance ratio of the crystallized part to whole metallic structure is 12% or less in terms of an area ratio (whole area ratio) and also an abundance ratio of the crystallized part in the base part to whole crystallized part is 40% or more in terms of an area ratio (an acquisition rate). The aluminum alloy member having such a metallic structure is obtained by heating a pre-finished product composed of a dendrite α-Al particle to a semi-molten state and pressurization-molding the semi-molten pre-finished product. This aluminum alloy member exhibits excellent impact resistance since the aluminum alloy member is composed of such a metallic structure that a weak crystallized part in which a crack is easily propagated is divided by the highly ductile base part (α-Al).
申请公布号 JP2013204066(A) 申请公布日期 2013.10.07
申请号 JP20120072005 申请日期 2012.03.27
申请人 TOYOTA CENTRAL R&D LABS INC 发明人 KAWAHARA HIROSHI;YAMADA YUKA;TAKAO HISAFUMI
分类号 C22C1/02;B22D17/00;C22C21/02;C22C21/06;C22F1/00;C22F1/043 主分类号 C22C1/02
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