Patents by Inventor Yonghao Zhao

Yonghao Zhao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Preparation of nanostructured materials having improved ductility
    Patent number: 7699946
    Abstract: A method for preparing a nanostructured aluminum alloy involves heating an aluminum alloy workpiece at temperature sufficient to produce a single phase coarse grained aluminum alloy, then refining the grain size of the workpiece at a temperature at or below room temperature, and then aging the workpiece to precipitate second phase particles in the nanosized grains of the workpiece that increase the ductility without decreasing the strength of the workpiece.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: April 20, 2010
    Assignee: Los Alamos National Security, LLC
    Inventors: Yonghao Zhao, Yuntian T. Zhu
  • Preparation of nanostructured materials having improved ductility
    Publication number: 20080196801
    Abstract: A method for preparing a nanostructured aluminum alloy involves heating an aluminum alloy workpiece at temperature sufficient to produce a single phase coarse grained aluminum alloy, then refining the grain size of the workpiece at a temperature at or below room temperature, and then aging the workpiece to precipitate second phase particles in the nanosized grains of the workpiece that increase the ductility without decreasing the strength of the workpiece.
    Type: Application
    Filed: May 22, 2006
    Publication date: August 21, 2008
    Inventors: Yonghao Zhao, Yuntian T. Zhu