Problem to be solved: to provide an aluminum alloy forgings excellent in mechanical characteristics and difficult to generate recrystallized grains and to provide a manufacturing method thereof.Aluminum alloy forgings 1 of the present invention are Cu: 0.15 mass% to 1.0 mass%Mg: 0.6 mass% to 1.15% by massSi: 0.95% to 1.25% by massMn: 0.4 mass% to 0.6 mass%Fe: 0.2 mass% to 0.3% by massCr: 0.11 mass% to 0.25 mass%Ti: 0.012 mass% to 0.035%B contains 0.0001 mass% to 0.03 mass%Zn content is 0.25 mass% or lessZr content is 0.05 mass% or less.The remainder consists of Al and inevitable impurities.The intensity of the diffraction peak of the FeMnSi phase in the X-ray diffraction pattern obtained by X-ray diffraction measurements of one section of the forgings isThe intensity of the diffraction peak of the (200) plane of the al phase isThe value of Q1 / Q2 is × It is characterized by 10 to 3 or less.Diagram
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