Aluminum alloy for a welded construction and welded joint using the same
First Claim
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1. An aluminum alloy comprising:
- a percent by weight of;
approximately 2.6 to 5% silicon;
approximately 0.2 to 0.8% magnesium;
approximately 0.2 to 1.5% zinc;
approximately 0.2 to 2% copper;
approximately 0.1 to 1.5% iron;
at least one additional ingredient selected from the group consisting of a percent by weight of approximately 0.01 to 1% manganese, 0.01 to 0.2% chromium, 0.01 to 0.2% titanium, 0.01 to 0.2% zirconium, and 0.01 to 0.2% vanadium; and
a balance of aluminum including inevitable impurities.
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Abstract
Disclosed is an Al alloy for a welded construction having excellent welding characteristics, which Al alloy comprises 1.5 to 5 wt % of Si (hereinafter, wt % is referred to as %), 0.2 to 1.5% of Mg, 0.2 to 1.5% of Zn, 0.2 to 2% of Cu, 0.1 to 1.5% of Fe, and at least one member selected from the group consisting of 0.01 to 1.0% of Mn, 0.01 to 0.2% of Cr, 0.01 to 0.2% of Ti, 0.01 to 0.2% of Zr, and 0.01 to 0.2% of V, with the balance being Al and inevitable impurities. Also disclosed is a welded joint having this Al alloy base metal welded with an Al—Mg— or Al—Si-series filler metal.
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Citations
15 Claims
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1. An aluminum alloy comprising:
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a percent by weight of;
approximately 2.6 to 5% silicon;
approximately 0.2 to 0.8% magnesium;
approximately 0.2 to 1.5% zinc;
approximately 0.2 to 2% copper;
approximately 0.1 to 1.5% iron;
at least one additional ingredient selected from the group consisting of a percent by weight of approximately 0.01 to 1% manganese, 0.01 to 0.2% chromium, 0.01 to 0.2% titanium, 0.01 to 0.2% zirconium, and 0.01 to 0.2% vanadium; and
a balance of aluminum including inevitable impurities.
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2. A method of welding comprising:
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forming a joint between two pieces of aluminum alloy base metal wherein the aluminum alloy comprises a percent by weight of;
approximately 1.5 to 5% silicon;
approximately 0.2 to 1.5% magnesium;
approximately 0.2 to 1.5% zinc;
approximately 0.2 to 2% copper;
approximately 0.1 to 1.5% iron;
at least one additional ingredient selected from the group consisting of a percent by weight of approximately 0.01 to 1% manganese, 0.01 to 0.2% chromium, 0.01 to 0.2% titanium, 0.01 to 0.2% zirconium, or 0.01 to 0.2% vanadium;
a balance of aluminum including inevitable impurities; and
welding said joint with an aluminum alloy filler material comprising 2 to 6% by weight of magnesium. - View Dependent Claims (3, 4, 5, 14)
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6. A welded joint comprising:
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approximately 0.5 to 4% silicon;
approximately 1.0 to 5.5% magnesium;
approximately 0.05 to 1.4% copper; and
a balance of aluminum including inevitable impurities. - View Dependent Claims (7)
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8. A method of welding comprising:
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forming a joint between two pieces of aluminum alloy base metal wherein the aluminum alloy comprises a percent by weight of;
approximately 1.5 to 5% silicon;
approximately 0.2 to 1.5% magnesium;
approximately 0.2 to 1.5% zinc;
approximately 0.2 to 2% copper;
approximately 0.1 to 1.5% iron;
at least one additional ingredient selected from the group consisting of a percent by weight of approximately 0.01 to 1% manganese, 0.01 to 0.2% chromium, 0.01 to 0.2% titanium, 0.01 to 0.2% zirconium, or 0.01 to 0.2% vanadium;
a balance of aluminum including inevitable impurities; and
welding said joint with an aluminum alloy filler material comprising 3 to 13% by weight silicon. - View Dependent Claims (9, 10, 11, 13, 15)
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12. A welded joint comprising:
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approximately 2.0 to 11% silicon;
approximately 0.05 to 1.4% magnesium;
approximately 0.05 to 1.8% copper; and
a balance of aluminum including inevitable impurities.
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Specification