Assembly of an aluminum component and of a steel component having a ZnAlMg alloy coating
AssigneeArcelorMittal
InventorsChristian Allely, Astrid Coffigny-Gregoire, Laurence Dosdat, Stéphane Morel
Life of this patent
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Abstract
An Al-steel assembly is provided. The assembly includes an aluminum-based element and a steel element on at least one surface of the aluminum-based element. The steel element has a metal coating made of a zinc-aluminum-magnesium alloy and includes from 2.3% to 3.3% by weight of magnesium and from 3.6% to 3.9% by weight of aluminum. A coated surface of the steel element is in contact with the aluminum-based element in an assembly zone and a protective coating coats the assembly around and adjacent the assembly zone. A body-in-white, further assembly and method are also provided.
Claims15
An assembly comprising:
- an aluminum-based element;
- and
- a steel element on at least one surface of the aluminum-based element, the steel element having a metal coating made of a zinc-aluminum-magnesium alloy consisting of:
- from 2.3% to 3.3% by weight of magnesium;
- and
- from 3.6% to 3.9% by weight of aluminum;
- and
- a remainder being zinc, inevitable impurities and possibly one or more additional elements selected from among Si, Sb, Pb, Ti, Ca, Mn, Sn, La, Ce, Cr, Ni or Bi;
- a coated surface of the steel element being in contact with the aluminum-based element in an assembly zone;
- and
- a protective coating coating the assembly around and adjacent the assembly zone.
An assembly comprising:
- an aluminum-based element having a first surface;
- a steel element provided on at least one surface of the aluminum-based element, the steel element having a metal coating made of a zinc-aluminum-magnesium alloy consisting of:
- from 2.3% to 3.3% by weight of magnesium, and
- from 3.6% to 3.9% by weight of aluminum, and
- a remainder of the metal coating being zinc, inevitable impurities and possibly one or more additional elements selected from among Si, Sb, Pb, Ti, Ca, Mn, Sn, La, Ce, Cr, Ni or Bi;
- and
- an adhesive bonding a coated surface of the steel element with the aluminum-based element in an active assembly zone, the aluminum-based element and the steel element being spaced from each other due to the adhesive.
Dependencies are inferred from the claim text.