ALUMINIUM ALLOY FORGING AND METHOD FOR PRODUCING THE SAME

摘要

Disclosed is an aluminum alloy forging having excellent high-temperature properties (e.g., fatigue strength in a high-temperature environment). The aluminum alloy forging is formed by forging an aluminum alloy. The aluminum alloy contains Cu in a content of 3.0 to 8.0 mass percent, Mg in a content of 0.01 to 2.0 mass percent, Ag in a content of 0.05 to 1.0 mass percent, and Mn in a content of 0.05 to 1.5 mass percent, with the remainder being Al and inevitable impurities. The aluminum forging has an average grain size of 500 µm or less and a grain aspect ratio (length-to-width ratio) of 10 or less.