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).
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Patent number: 10570469Abstract: 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: GrantFiled: November 17, 2017Date of Patent: February 25, 2020Assignee: ATI PROPERTIES LLCInventors: Robin M. Forbes Jones, Erin T. McDevitt
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Publication number: 20180073092Abstract: 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: ApplicationFiled: November 17, 2017Publication date: March 15, 2018Inventors: Robin M. Forbes Jones, Erin T. McDevitt
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Patent number: 9869003Abstract: 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: GrantFiled: February 26, 2013Date of Patent: January 16, 2018Assignee: ATI PROPERTIES LLCInventors: Robin M. Forbes Jones, Erin T. McDevitt
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Publication number: 20140238552Abstract: 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: ApplicationFiled: February 26, 2013Publication date: August 28, 2014Applicant: ATI PROPERTIES, INC.Inventors: Robin M. Forbes Jones, Erin T. McDevitt
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Publication number: 20130133793Abstract: 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: ApplicationFiled: November 30, 2011Publication date: May 30, 2013Applicant: ATI Properties, Inc.Inventor: Erin T. McDevitt
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Patent number: 8313592Abstract: 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: GrantFiled: March 15, 2011Date of Patent: November 20, 2012Assignee: ATI Properties, Inc.Inventors: Wei-Di Cao, Erin T. McDevitt
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Publication number: 20110186190Abstract: 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: ApplicationFiled: March 15, 2011Publication date: August 4, 2011Applicant: ATI Properties, Inc.Inventors: Wei-Di Cao, Erin T. McDevitt
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Patent number: 7931758Abstract: 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: GrantFiled: July 28, 2008Date of Patent: April 26, 2011Assignee: ATI Properties, Inc.Inventors: Wei-Di Cao, Erin T. McDevitt
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Publication number: 20100018615Abstract: 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: ApplicationFiled: July 28, 2008Publication date: January 28, 2010Applicant: ATI Properties, Inc.Inventors: Wei-Di Cao, Erin T. McDevitt
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Process for applying a metallic coating, an intermediate coated product, and a finish coated product
Patent number: 7413769Abstract: 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: GrantFiled: July 1, 2005Date of Patent: August 19, 2008Inventor: Erin T. McDevitt -
Patent number: 7238430Abstract: 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: GrantFiled: April 19, 2005Date of Patent: July 3, 2007Assignee: ISG Technologies Inc.Inventors: Erin T. McDevitt, Fritz J. Friedersdorf, H. E. George Rommal
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Patent number: 7041386Abstract: 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: GrantFiled: January 7, 2004Date of Patent: May 9, 2006Assignee: ISG Technologies Inc.Inventor: Erin T. McDevitt
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Publication number: 20040161629Abstract: 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: ApplicationFiled: January 7, 2004Publication date: August 19, 2004Inventor: Erin T. McDevitt
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Patent number: 6689489Abstract: 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: GrantFiled: September 27, 2002Date of Patent: February 10, 2004Assignee: ISG Technologies, Inc.Inventor: Erin T. McDevitt
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Publication number: 20030113575Abstract: 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: ApplicationFiled: September 27, 2002Publication date: June 19, 2003Applicant: Bethlehem Steel CorporationInventor: Erin T. McDevitt
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Patent number: 6468674Abstract: 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: GrantFiled: October 18, 2001Date of Patent: October 22, 2002Assignee: Bethlehem Steel CorporationInventors: Fritz J. Friedersdorf, Erin T. McDevitt, H. E. George Rommal
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Publication number: 20020136920Abstract: 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: ApplicationFiled: March 25, 2002Publication date: September 26, 2002Applicant: Bethlehem Steel CorporationInventors: Erin T. McDevitt, Scott A. Kriner
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Patent number: 6440582Abstract: 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: GrantFiled: March 25, 2002Date of Patent: August 27, 2002Assignee: Bethlehem Steel CorporationInventors: Erin T. McDevitt, Scott A. Kriner
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Publication number: 20020058154Abstract: 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: ApplicationFiled: October 18, 2001Publication date: May 16, 2002Inventors: Fritz J. Friedersdorf, Erin T. McDevitt, H. E. George Rommal