Patents by Inventor Arthur F. Steeves

Arthur F. Steeves 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).

  • Heat treatment of NiCrFe alloy to optimize resistance to intergrannular stress corrosion
    Patent number: 4481043
    Abstract: A process of producing a NiCrFe alloy having a high resistance to stress corrosion cracking comprising heating a NiCrFe alloy to a temperature sufficient to enable the carbon present in the alloy body in the form of carbide deposits to enter into solution, rapidly cool the alloy body, and heat the cooled body to a temperature between 1100.degree. to 1500.degree. F. for about 1 to 30 hours.
    Type: Grant
    Filed: December 7, 1982
    Date of Patent: November 6, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Arthur F. Steeves, Albert E. Bibb
  • Micrographic detection of plastic deformation in nickel base alloys
    Patent number: 4445988
    Abstract: A method for detecting low levels of plastic deformation in metal articles comprising electrolytically etching a flow free surface of the metal article with nital at a current density of less than about 0.1 amp/cm.sup.2 and microscopically examining the etched surface to determine the presence of alternating striations. The presence of striations indicates plastic deformation in the article.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: May 1, 1984
    Assignee: The United States of America as represented by the Department of Energy
    Inventors: Arthur F. Steeves, Albert E. Bibb
  • Attack polish for nickel-base alloys and stainless steels
    Patent number: 4383857
    Abstract: A chemical attack polish and polishing procedure for use on metal surfaces such as nickel base alloys and stainless steels. The chemical attack polish comprises Fe(NO.sub.3).sub.3, concentrated CH.sub.3 COOH, concentrated H.sub.2 SO.sub.4 and H.sub.2 O. The polishing procedure includes saturating a polishing cloth with the chemical attack polish and submicron abrasive particles and buffing the metal surface.
    Type: Grant
    Filed: July 6, 1981
    Date of Patent: May 17, 1983
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Arthur F. Steeves, Donald P. Buono
  • Method of polishing nickel-base alloys and stainless steels
    Patent number: 4305779
    Abstract: A chemical attack polish and polishing procedure for use on metal surfaces such as nickel base alloys and stainless steels. The chemical attack polish comprises Fe(NO.sub.3).sub.3, concentrated CH.sub.3 COOH, concentrated H.sub.2 SO.sub.4 and H.sub.2 O. The polishing procedure includes saturating a polishing cloth with the chemical attack polish and submicron abrasive particles and buffing the metal surface.
    Type: Grant
    Filed: May 28, 1980
    Date of Patent: December 15, 1981
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Arthur F. Steeves, Donald P. Buono
  • Overlapping double etch technique for evaluation of metallic alloys to stress corrosion cracking
    Patent number: 4300980
    Abstract: A double overlapping etch zone technique for evaluation of the resistance of metallic alloys to stress corrosion cracking. The technique involves evaluating the metallic alloy along the line of demarcation between an overlapping double etch zone and single etch zone formed on the metallic alloy surface.
    Type: Grant
    Filed: May 28, 1980
    Date of Patent: November 17, 1981
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Arthur F. Steeves, James C. Stewart