Manufacturing method for aluminum alloy forgings

Abstract

This invention provides a method for manufacturing aluminum alloy forgings that exhibit excellent mechanical properties and corrosion resistance at room temperature. [Solution] The present invention provides a method for manufacturing aluminum alloy forgings that satisfies the following equations (1) and (2): [Mg content] × 1.587 ≥ -4.1 × [Cu content] 2 +7.8 × [Cu content] -1.9···(1), [Si content] × 2.730 ≥ -4.1 × [Cu content] 2 +7.8 × [Cu content] -1.9···(2), the ratio of the diffraction peak intensity Q1 of the CuAl2 phase to the diffraction peak intensity Q2 of the (200) plane of the Al phase obtained by X-ray diffraction is 3 × 10 -2 The process includes selecting the following aluminum alloy forged product.

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