Patents by Inventor John Michael Hyzak

John Michael Hyzak 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).

  • Method for controlling grain size in Ni-base superalloys
    Patent number: 5649280
    Abstract: A method of high retained strain forging is described for Ni-base superalloys, particularly those which comprise a mixture of .gamma. and .gamma.' phases, and most particularly those which contain at least about 30 percent by volume of .gamma.'. The method utilizes an extended subsolvus anneal to recrystallize essentially all of the superalloy and form a uniform, free grain size. Such alloys may also be given a supersolvus anneal to coarsen the grain size and redistribute the .gamma.'. The method permits the manufacture of forged articles having a fine grain size in the range of about ASTM 5-12 (5-60 .mu.m).
    Type: Grant
    Filed: January 2, 1996
    Date of Patent: July 15, 1997
    Assignee: General Electric Company
    Inventors: Charles Philip Blankenship, Michael Francis Henry, Eric Scott Huron, John Michael Hyzak