Cast bar of an aluminum alloy for wrought products, having...

Details Cast bar of an aluminum alloy for wrought products, having... Cast bar of an aluminum alloy for wrought products, having...

C - Chemistry, Metallurgy

22

C

75/1, 148/11, 22

C22C 21/06 (2006.01) C22C 21/04 (2006.01)

Patent

CA 1209825

A CAST BAR OF AN ALUMINUM ALLOY FOR WROUGHT PRODUCTS, HAVING IMPROVED MECHANICAL PROPERTIES AND WORKABILITY, AS WELL AS PROCESS FOR PRODUCING THE SAME ABSTRACT In AA standard 5000 series aluminum base alloys for wrought products, the large-sized products have been usually produced using large billets which had non-uniform cast structure, and the small-sized products have been usually produced by using extruded bars which had a disadvantageous directional property. The continuously cast bar of aluminum base alloys for wrought product according to the present invention: is of homogeneous structure; is free of defects; exhibits excellent mechanical properties, and; can be subjected, as cast or after a heat, treatment, to a working operation such as forging. A critical value of the secondary dendrite arm spacing (DAS) and a critical value of the size of the grain diameter and second phase particles, which critical values are substanti- ally lower than those in the conventional aluminum alloy ingot, are responsible for fine cast structure capable of remarkably enhancing the workability and the mechanical properties of the aluminum base alloys having the following compositions. AA 5000 series alloy: 2.0-6.0 Mg; 0.03-0.3% Cr, and; balance Al.

442518

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