ALUMINIUM-BASED HEAT-RESISTANT ELECTROCONDUCTIVE ALLOY Russian patent published in 2016 - IPC C22C21/12 

FIELD: metallurgy.

SUBSTANCE: aluminium-based alloy contains the following in wt %: copper 0.5-2.0; manganese 0.3-1.6; zirconium 0.1-0.5; boron 0.02-0.15; silver 0.01-0.5; scandium 0.02-0.15; iron 0.01-0.3; silicon 0.01-0.35, inevitable admixtures up to 0.1, from them each up to 0.03, aluminium - rest. The alloy has structure containing the aluminium solid solution and nanoparticles of secondary zirconium and scandium aluminides, and boron presents in the alloy structure in form of nanoparticles AlB₂, AlB₁₂ with average size 50 nm maximum. The alloy has tensile strength (σ_h) after holding at 250°C for 400 hours is at least 170 MPa, and electrical conductivity is at least 55% IACS.

EFFECT: increased heat resistance.

2 cl, 2 tbl