Patents by Inventor Erin T. McDevitt

Erin T. McDevitt 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).

  • Patent number: 10570469
    Abstract: A method of processing a workpiece to inhibit precipitation of intermetallic compounds includes at least one of thermomechanically processing and cooling a workpiece including an austenitic alloy. During the at least one of thermomechanically working and cooling the workpiece, the austenitic alloy is at temperatures in a temperature range spanning a temperature just less than a calculated sigma solvus temperature of the austenitic alloy down to a cooling temperature for a time no greater than a critical cooling time.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: February 25, 2020
    Assignee: ATI PROPERTIES LLC
    Inventors: Robin M. Forbes Jones, Erin T. McDevitt
  • Publication number: 20180073092
    Abstract: A method of processing a workpiece to inhibit precipitation of intermetallic compounds includes at least one of thermomechanically processing and cooling a workpiece including an austenitic alloy. During the at least one of thermomechanically working and cooling the workpiece, the austenitic alloy is at temperatures in a temperature range spanning a temperature just less than a calculated sigma solvus temperature of the austenitic alloy down to a cooling temperature for a time no greater than a critical cooling time.
    Type: Application
    Filed: November 17, 2017
    Publication date: March 15, 2018
    Inventors: Robin M. Forbes Jones, Erin T. McDevitt
  • Patent number: 9869003
    Abstract: A method of processing a workpiece to inhibit precipitation of intermetallic compounds includes at least one of thermomechanically processing and cooling a workpiece including an austenitic alloy. During the at least one of thermomechanically working and cooling the workpiece, the austenitic alloy is at temperatures in a temperature range spanning a temperature just less than a calculated sigma solvus temperature of the austenitic alloy down to a cooling temperature for a time no greater than a critical cooling time.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: January 16, 2018
    Assignee: ATI PROPERTIES LLC
    Inventors: Robin M. Forbes Jones, Erin T. McDevitt
  • Publication number: 20140238552
    Abstract: A method of processing a workpiece to inhibit precipitation of intermetallic compounds includes at least one of thermomechanically processing and cooling a workpiece including an austenitic alloy. During the at least one of thermomechanically working and cooling the workpiece, the austenitic alloy is at temperatures in a temperature range spanning a temperature just less than a calculated sigma solvus temperature of the austenitic alloy down to a cooling temperature for a time no greater than a critical cooling time.
    Type: Application
    Filed: February 26, 2013
    Publication date: August 28, 2014
    Applicant: ATI PROPERTIES, INC.
    Inventors: Robin M. Forbes Jones, Erin T. McDevitt
  • Publication number: 20130133793
    Abstract: A method for heat treating a 718-type nickel-base comprises heating a 718-type nickel-base alloy to a heat treating temperature, and holding the alloy at the heat treating temperature for a heat treating time sufficient to form an equilibrium or near-equilibrium concentration of ?-phase grain boundary precipitates within the nickel-base alloy and up to 25 percent by weight of total ??-phase and ??-phase. The 718-type nickel-base alloy is air cooled. The present disclosure also includes a 718-type nickel-base alloy comprising a near-equilibrium concentration of ?-phase grain boundary precipitates and up to 25 percent by weight of total ??-phase and ??-phase precipitates. Alloys according to the disclosure may be included in articles of manufacture such as, for example, face sheet, honeycomb core elements, and honeycomb panels for thermal protection systems for hypersonic flight vehicles and space vehicles.
    Type: Application
    Filed: November 30, 2011
    Publication date: May 30, 2013
    Applicant: ATI Properties, Inc.
    Inventor: Erin T. McDevitt
  • Patent number: 8313592
    Abstract: A thermal mechanical treatment method includes hot working a precipitation hardening martensitic stainless steel, quenching the stainless steel, and aging the stainless steel. According to certain embodiments, the thermal mechanical treatment does not include solution heat treating the stainless steel prior to aging or cryogenically cooling the stainless steel. An article includes a precipitation hardening martensitic stainless steel having a process history that includes hot working the stainless steel, quenching the stainless steel, and aging the stainless steel. According to certain embodiments, the process history does not include solution heat treating the stainless steel prior to aging or cryogenically cooling the stainless steel.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: November 20, 2012
    Assignee: ATI Properties, Inc.
    Inventors: Wei-Di Cao, Erin T. McDevitt
  • Publication number: 20110186190
    Abstract: A thermal mechanical treatment method includes hot working a precipitation hardening martensitic stainless steel, quenching the stainless steel, and aging the stainless steel. According to certain embodiments, the thermal mechanical treatment does not include solution heat treating the stainless steel prior to aging or cryogenically cooling the stainless steel. An article includes a precipitation hardening martensitic stainless steel having a process history that includes hot working the stainless steel, quenching the stainless steel, and aging the stainless steel. According to certain embodiments, the process history does not include solution heat treating the stainless steel prior to aging or cryogenically cooling the stainless steel.
    Type: Application
    Filed: March 15, 2011
    Publication date: August 4, 2011
    Applicant: ATI Properties, Inc.
    Inventors: Wei-Di Cao, Erin T. McDevitt
  • Patent number: 7931758
    Abstract: A thermal mechanical treatment method includes hot working a precipitation hardening martensitic stainless steel, quenching the stainless steel, and aging the stainless steel. According to certain embodiments, the thermal mechanical treatment does not include solution heat treating the stainless steel prior to aging or cryogenically cooling the stainless steel. An article includes a precipitation hardening martensitic stainless steel having a process history that includes hot working the stainless steel, quenching the stainless steel, and aging the stainless steel. According to certain embodiments, the process history does not include solution heat treating the stainless steel prior to aging or cryogenically cooling the stainless steel.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: April 26, 2011
    Assignee: ATI Properties, Inc.
    Inventors: Wei-Di Cao, Erin T. McDevitt
  • Publication number: 20100018615
    Abstract: A thermal mechanical treatment method includes hot working a precipitation hardening martensitic stainless steel, quenching the stainless steel, and aging the stainless steel. According to certain embodiments, the thermal mechanical treatment does not include solution heat treating the stainless steel prior to aging or cryogenically cooling the stainless steel. An article includes a precipitation hardening martensitic stainless steel having a process history that includes hot working the stainless steel, quenching the stainless steel, and aging the stainless steel. According to certain embodiments, the process history does not include solution heat treating the stainless steel prior to aging or cryogenically cooling the stainless steel.
    Type: Application
    Filed: July 28, 2008
    Publication date: January 28, 2010
    Applicant: ATI Properties, Inc.
    Inventors: Wei-Di Cao, Erin T. McDevitt
  • Patent number: 7413769
    Abstract: The present invention is directed to a method of refining spangle facet size in a hot-dip coated product by applying grain-refining particles to the surface of a steel substrate before immersion into the hot-dip coating bath, to an intermediate coated steel sheet, and to a finish coated steel sheet having a different coating spangle facet size on opposite surfaces.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: August 19, 2008
    Inventor: Erin T. McDevitt
  • Patent number: 7238430
    Abstract: A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to control the spangle facet size of the coated product, improve tension bend rust stain performance, and improve coated product paintability. Constituents include borides such as titanium boride and aluminum borides, carbides such as titanium carbide, and aluminides such as titanium aluminide. The method produces a coated steel product that does not require temper rolling for painting.
    Type: Grant
    Filed: April 19, 2005
    Date of Patent: July 3, 2007
    Assignee: ISG Technologies Inc.
    Inventors: Erin T. McDevitt, Fritz J. Friedersdorf, H. E. George Rommal
  • Patent number: 7041386
    Abstract: A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to control the spangle facet size of the coated product, improve tension bend rust stain performance, and improve coated product paintability. Constituents include borides such as titanium boride and aluminum borides, carbides such as titanium carbide, andaluminides such as titanium aluminide. The method produces a coated steel product does not require temper rolling for painting.
    Type: Grant
    Filed: January 7, 2004
    Date of Patent: May 9, 2006
    Assignee: ISG Technologies Inc.
    Inventor: Erin T. McDevitt
  • Publication number: 20040161629
    Abstract: A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to control the spangle facet size of the coated product, improve tension bend rust stain performance, and improve coated product paintability. Constituents include borides such as titanium boride and aluminum borides, carbides such as titanium carbide, and aluminides such as titanium aluminide. The method produces a coated steel product that does not require temper rolling for painting.
    Type: Application
    Filed: January 7, 2004
    Publication date: August 19, 2004
    Inventor: Erin T. McDevitt
  • Patent number: 6689489
    Abstract: A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to control the spangle facet size of the coated product, improve tension bend rust stain performance, and improve coated product paintability. Constituents include borides such as titanium boride and aluminum borides, carbides such as titanium carbide, and aluminides such as titanium aluminide. The method produces a coated steel product that does not require temper rolling for painting.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: February 10, 2004
    Assignee: ISG Technologies, Inc.
    Inventor: Erin T. McDevitt
  • Publication number: 20030113575
    Abstract: A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to control the spangle facet size of the coated product, improve tension bend rust stain performance, improve coated surface appearance when brushed, and coated product paintability. Constituents include borides such as titanium boride and aluminum borides, carbides such as titanium carbide, and aluminides such as titanium aluminide. The method produces a coated steel product that does not require temper rolling for painting.
    Type: Application
    Filed: September 27, 2002
    Publication date: June 19, 2003
    Applicant: Bethlehem Steel Corporation
    Inventor: Erin T. McDevitt
  • Patent number: 6468674
    Abstract: A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to decrease the spangle facet size of the coated product, improve tension bend rust stain performance, and coated product paintability. Constituents include borides such as titanium boride and aluminum borides, carbides such as titanium carbide, and aluminides such as titanium aluminide. The method produces a coated steel product that does not require temper rolling for painting.
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: October 22, 2002
    Assignee: Bethlehem Steel Corporation
    Inventors: Fritz J. Friedersdorf, Erin T. McDevitt, H. E. George Rommal
  • Publication number: 20020136920
    Abstract: A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to decrease the spangle facet size of the coated product, improve tension bend rust stain performance, improve coated surface appearance when brushed, and coated product paintability. Constituents include borides such as titanium boride and aluminum borides, carbides such as titanium carbide, and aluminides such as titanium aluminide. The method produces a coated steel product that does not require temper rolling for painting.
    Type: Application
    Filed: March 25, 2002
    Publication date: September 26, 2002
    Applicant: Bethlehem Steel Corporation
    Inventors: Erin T. McDevitt, Scott A. Kriner
  • Patent number: 6440582
    Abstract: A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to decrease the spangle facet size of the coated product, improve tension bend rust stain performance, improve coated surface appearance when brushed, and coated product paintability. Constituents include borides such as titanium boride and aluminum borides, carbides such as titanium carbide, and aluminides such as titanium aluminide. The method produces a coated steel product that does not require temper rolling for painting.
    Type: Grant
    Filed: March 25, 2002
    Date of Patent: August 27, 2002
    Assignee: Bethlehem Steel Corporation
    Inventors: Erin T. McDevitt, Scott A. Kriner
  • Publication number: 20020058154
    Abstract: A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to decrease the spangle facet size of the coated product, improve tension bend rust stain performance, and coated product paintability. Constituents include borides such as titanium boride and aluminum borides, carbides such as titanium carbide, and aluminides such as titanium aluminide. The method produces a coated steel product that does not require temper rolling for painting.
    Type: Application
    Filed: October 18, 2001
    Publication date: May 16, 2002
    Inventors: Fritz J. Friedersdorf, Erin T. McDevitt, H. E. George Rommal