Patent ID: 6329075
Filing Date: 2001-12-11
Classification: B21B,B23K,B32B,C22C,F28F,Y10S,Y10T

Abstract:
An aluminum alloy composite comprising:a) a core layer having opposing core surfaces and being formed from a first aluminum alloy material, selected from of one of an AA3000 series, an AA6000 series, and an AA8000 series aluminum alloy, having less than 99% by weight of aluminum and more than 1% by weight of one or more metallic elements, the one or more metallic elements being in or out of solution and increasing the strength of the first aluminum alloy material such that the first aluminum alloy material has a tensile strength greater than 15 KSI, and having an electrical conductivity less than 50% IACS; andb) at least one cladding layer having opposing surfaces, one of the opposing surfaces adjacent one the opposing core surfaces, with at least a portion of the other opposing surfaces exposed for fusing with another aluminum component, the at least one cladding layer being formed of a second aluminum alloy material, selected from one of an AA1000 series and an AA7000 series aluminum alloy, having less than 1% by weight of the one more metallic elements such that the second aluminum alloy material has a tensile strength less than 15 KSI, having from zero to up to 2.5% by weight of other metallic elements that are in solution and increase corrosion potential negativity so that the corrosion potential of the second aluminum alloy material is at least 20 mV more negative than a corrosion potential of the first aluminum alloy of the core layer, and having an electrical conductivity of greater than 50% IACS.