ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,428,715, issued on Sept. 30, was assigned to SRL Holding Co. Pty Ltd (Melbourne, Australia).
"Heat treatment of aluminum alloys containing silicon and scandium" was invented by Timothy J. Langan (Catonsville, Md.) and Thomas Dorin (Yarraville, Australia).
According to the abstract* released by the U.S. Patent & Trademark Office: "Heat treatment of aluminum alloys containing Si with Sc additions improves mechanical properties of the alloys by the formation of Sc-containing dispersoids. The Al-Si-Sc alloys may include Zr or other refractory metals, and may also include Mg, Cu and/or Cr. Depending upon the cooling rate used during casting, at least some of the Sc-containing dispersoids...