Patents Examined by George Wysromierski
  • High strengths copper base shape memory alloy and its manufacturing process
    Patent number: 5026441
    Abstract: This invention is concerned with the development of a Cu-base shape memory alloy and it's manufacturing process. The alloy is a Cu-Al-Ni-Zr-Si shape memory alloy exhibiting high strength(830Mpa, 85kg/mml) and good ductility(7.5 - 8%) due to grain size refinement by the addition of microalloying elements (Zr, Si). Also, the invented alloy has good thermal stability and is useful for temperatures of up to about 300.degree. C.
    Type: Grant
    Filed: August 23, 1990
    Date of Patent: June 25, 1991
    Assignee: Korea Advanced Institute of Science & Technology
    Inventors: Young-gil Kim, Jin-woong Kim, Dong-wan Nho