HIGH STRENGTH Al ALLOY FORGED MATERIAL HAVING EXCELLENT CORROSION RESISTANCE AND WORKABILITY AND METHOD FOR PRODUCING THE SAME

PROBLEM TO BE SOLVED: To provide a high strength Al alloy forged material which has no coarse crystal grains in the surface layer part thereof and therefore has a prescribed hardness or more, and has excellent corrosion resistance and workability. SOLUTION: The forged material is composed of Al allo...

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Bibliographic Details
Main Authors MATSUDA KOICHI, HATTA HIDECHIKA
Format Patent
LanguageEnglish
Published 02.06.2011
Subjects
ALLOYS
CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
FORGE FURNACES
FORGING
HAMMERING
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
METALLURGY
PERFORMING OPERATIONS
PRESSING METAL
PUNCHING METAL
RIVETING
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:PROBLEM TO BE SOLVED: To provide a high strength Al alloy forged material which has no coarse crystal grains in the surface layer part thereof and therefore has a prescribed hardness or more, and has excellent corrosion resistance and workability. SOLUTION: The forged material is composed of Al alloy having an alloy composition containing, by mass, 0.6 to 1.2% Mg, 0.4 to 1.3% Si, 0.03 to 0.8% Cu, 0.04 to 0.5% Fe and 0.005 to 0.10% Ti, and the balance Al with inevitable impurities. In the forged material, Vickers hardness in the optional cross-section thereof is ≥110 HV10, also, the average crystal grain size in the surface layer part thereof is ≤150 μm, and the maximum grain size of intermetallic compounds is <5 μm. COPYRIGHT: (C)2011,JPO&INPIT
Bibliography:Application Number: JP20090264849