Patents by Inventor Veronique Garat

Veronique Garat 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 of heat treatment for desensitizing a nickel-based alloy relative to environmentally-assisted cracking, in particular for a nuclear reactor fuel assembly and for a nuclear reactor, and a part made of the alloy and subjected to the treatment

Patent number: 8470106

Abstract: A heat treatment method for desensitizing a nickel-based alloy with respect to environmentally-assisted cracking, the alloy having the following composition in percentages by weight: C?0.10%; Mn?0.5%; Si?0.5%; P?0.015%; S?0.015%; Ni?40%; Cr=12%-40%; Co?10%; Al?5%; Mo=0.1%-15%; Ti?5%; B?0.01%; Cu?5%; W=0.1%-15%; Nb=0-10%; Ta?10%; the balance being Fe, and inevitable impurities that result from processing, characterized in that the alloy is held at 950° C.-1160° C. in an atmosphere of pure hydrogen or containing at least 100 ppm of hydrogen mixed with an inert gas. A part made of a nickel-based alloy having the composition and that has been subjected to the heat treatment.

Type: Grant

Filed: December 6, 2007

Date of Patent: June 25, 2013

Assignee: Areva NP

Inventors: Jean-Marc Cloue, Veronique Garat, Eric Andrieu, Julien Deleume
METHOD OF HEAT TREATMENT FOR DESENSITIZING A NIKEL-BASED ALLOY RELATIVE TO ENVIRONMENTALLY-ASSISTED CRAKING, IN PARTICULAR FOR A NUCLEAR FOR A NUCLEAR REACTOR FUEL ASSEMBLY AND FOR A NUCLEAR REACTOR, AND A PART MADE OF THE ALLOY AND SUBJECTED TO THE TREATMENT

Publication number: 20100116383

Abstract: A heat treatment method for desensitizing a nickel-based alloy with respect to environmentally-assisted cracking, the alloy having the following composition in percentages by weight: C?0.10%; Mn?0.5%; Si?0.5%; P?0.015%; S?0.015%; Ni?40%; Cr=12%-40%; Co?10%; Al?5%; Mo=0.1%-15%; Ti?5%; B?0.01%; Cu?5%; W=0.1%-15%; Nb=0-10%; Ta?10%; the balance being Fe, and inevitable impurities that result from processing, characterized in that the alloy is held at 950° C.-1160° C. in an atmosphere of pure hydrogen or containing at least 100 ppm of hydrogen mixed with an inert gas. A part made of a nickel-based alloy having the composition and that has been subjected to the heat treatment.

Type: Application

Filed: December 6, 2007

Publication date: May 13, 2010

Applicant: AREVA NP

Inventors: Jean-Marc Cloue, Veronique Garat, Rric Andrieu, Julien Deleume

Method of heat treatment for desensitizing a nickel-based alloy relative to environmentally-assisted cracking, in particular for a nuclear reactor fuel assembly and for a nuclear reactor, and a part made of the alloy and subjected to the treatment

METHOD OF HEAT TREATMENT FOR DESENSITIZING A NIKEL-BASED ALLOY RELATIVE TO ENVIRONMENTALLY-ASSISTED CRAKING, IN PARTICULAR FOR A NUCLEAR FOR A NUCLEAR REACTOR FUEL ASSEMBLY AND FOR A NUCLEAR REACTOR, AND A PART MADE OF THE ALLOY AND SUBJECTED TO THE TREATMENT