METHOD FOR WELDING ALUMINUM ALLOY MATERIALS AND ALUMINUM ALLOY PANEL PRODUCED THEREBY
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United States of America Patent
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Jul 18, 2012
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Jul 18, 2012
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Abstract
First and second aluminum alloy materials (2, 3), each comprised of a 5000-series aluminum alloy containing second phase particles having a diameter less than 5 μm in a distribution density of less than or equal to 10,000 second phase particles/mm2, are welded together by abutting portions of the first and second aluminum alloy materials, and friction stir welding along the abutted portions (5) to form an integrally-welded aluminum alloy panel (1). The friction stir welding is performed using a tool (8) having a shoulder (10) under the following conditions: (i) the shoulder of the tool has a diameter (d) in the range of 3 mm≦d≦8 mm and (ii) the revolution number (r) of the tool is 6
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