Patents by Inventor Zhao P. Lu

Zhao P. Lu 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).

  • Oxidation resistant high creep strength austenitic stainless steel
    Patent number: 7744813
    Abstract: An austenitic stainless steel displaying high temperature oxidation and creep resistance has a composition that includes in weight percent 15 to 21 Ni, 10 to 15 Cr, 2 to 3.5 Al, 0.1 to 1 Nb, and 0.05 to 0.15 C, and that is free of or has very low levels of N, Ti and V. The alloy forms an external continuous alumina protective scale to provide a high oxidation resistance at temperatures of 700 to 800° C. and forms NbC nanocarbides and a stable essentially single phase fcc austenitic matrix microstructure to give high strength and high creep resistance at these temperatures.
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: June 29, 2010
    Assignee: UT-Battelle, LLC
    Inventors: Michael P. Brady, Bruce A. Pint, Chain-Tsuan Liu, Philip J. Maziasz, Yukinori Yamamoto, Zhao P. Lu
  • OXIDATION RESISTANT HIGH CREEP STRENGTH AUSTENTIC STAINLESS STEEL
    Publication number: 20080163957
    Abstract: An austenitic stainless steel displaying high temperature oxidation and creep resistance has a composition that includes in weight percent 15 to 21 Ni, 10 to 15 Cr, 2 to 3.5 Al, 0.1 to 1 Nb, and 0.05 to 0.15 C, and that is free of or has very low levels of N, Ti and V. The alloy forms an external continuous alumina protective scale to provide a high oxidation resistance at temperatures of 700 to 800° C. and forms NbC nanocarbides and a stable essentially single phase fcc austenitic matrix microstructure to give high strength and high creep resistance at these temperatures.
    Type: Application
    Filed: January 4, 2007
    Publication date: July 10, 2008
    Applicant: UT-Battelle, LLC
    Inventors: Michael P. Brady, Bruce A. Pint, Chain-Tsuan Liu, Philip J. Maziasz, Yukinori Yamamoto, Zhao P. Lu
  • Fe-based metallic glass for structural and functional use
    Publication number: 20040154701
    Abstract: A bulk amorphous alloy includes the approximate composition Fe(100-a-b-c-d-e-f)YaMbTcAldSneBf wherein: M comprises at least one of the group consisting of: Zr, Hf, Pb, Ti, Nb, Mo and W; T comprises at least one of the group consisting of Co, Ni and Cr; a is an atomic percentage, and a<5; b is an atomic percentage, and 2≦b≦25; c is an atomic percentage, and 1≦c≦16; d is an atomic percentage, and d<5; e is an atomic percentage, and e<5; and f is an atomic percentage, and 11≦f≦22.
    Type: Application
    Filed: February 12, 2003
    Publication date: August 12, 2004
    Inventors: Zhao P. Lu, Chain T. Liu, Seetharama C. Deevi