Patents by Inventor Abdelhakim Belhadjhamida
Abdelhakim Belhadjhamida 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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Publication number: 20240018630Abstract: Alloy compositions and associated articles are described herein which, in some embodiments, exhibit enhancements to ductility and processing capabilities without significant sacrifices to hardness, wear resistance, and/or corrosion resistance. An alloy, in some embodiments, comprises 0-40 wt. % nickel, 14-20 wt. % chromium, 24-35 wt. % molybdenum, 0-15 wt. % iron, 0-1.5 wt. % manganese, 0.01-0.1 wt. % carbon, 0-15 wt. % tungsten, and the balance cobalt, wherein the alloy has a configurational entropy greater than 1.5R, where R is the universal gas constant.Type: ApplicationFiled: May 25, 2022Publication date: January 18, 2024Inventors: Matthew YAO, Abdelhakim BELHADJHAMIDA, Don WILLIAMS
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Patent number: 11021775Abstract: In one aspect, cobalt-based alloys are described herein comprising composition and microstructure permitting a balance of hardness, toughness and wear resistance desirable for wood cutting applications. A cobalt-based alloy comprises a chromium rich carbide phase in an amount of 15-30 volume percent, a tungsten-rich phase in an amount of 9-15 volume percent and a balance of cobalt-rich solid solution matrix comprising nickel, chromium, vanadium and tungsten.Type: GrantFiled: October 25, 2017Date of Patent: June 1, 2021Assignee: KENNAMETAL INC.Inventors: Matthew Yao, Abdelhakim Belhadjhamida, Brad McLane
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Patent number: 10967466Abstract: Methods of superalloy article repair are provided. In some embodiments, a method for repairing a nickel-based superalloy article comprises providing a layered assembly over a damaged region of the nickel-based superalloy article, the layered assembly comprising a nickel-based superalloy preform, an infiltration alloy preform and a melting point depressant component. The layered assembly is heated to form a nickel-based filler alloy metallurgically bonded to the damaged region, wherein primary carbide and secondary carbide phases are present in the nickel-based filler alloy in a combined amount of 0.5 to 10 vol. %.Type: GrantFiled: April 20, 2017Date of Patent: April 6, 2021Assignee: KENNAMETAL INC.Inventors: Qingjun Zheng, Michael Meyer, Martin G. Perez, Abdelhakim Belhadjhamida
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Publication number: 20200353537Abstract: Powder alloy compositions and associated additive manufacturing techniques are described herein for production of sintered articles with microstructure and/or enhanced wear and corrosion resistance. In some embodiments, an article comprises sintered cobalt-based alloy having chromium carbide precipitates dispersed therein, the chromium carbide precipitates having an average size less than 4 ?m.Type: ApplicationFiled: May 6, 2019Publication date: November 12, 2020Inventors: Martin G. PEREZ, Paul D. PRICHARD, Matthew YAO, John SKWARA, Abdelhakim BELHADJHAMIDA, Kevin M. GAMBLE, Michael J. MEYER
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Patent number: 10428406Abstract: Cobalt-based alloy compositions are described herein having properties compatible with thermal spray and sintering techniques. Such alloy compositions can provide claddings to a variety of metallic substrates having complex geometries, wherein the claddings exhibit desirable density, hardness, wear resistance and corrosion resistance. Briefly, an alloy composition described herein comprises 15-25 wt. % chromium, 15-20 wt. % molybdenum, 0-15 wt. % tungsten, 10-20 wt. % nickel, 2.5-3.5 wt. % boron, 2.5-4.5 wt. % silicon, 1-2 wt. % carbon and the balance cobalt, wherein a ratio of boron to silicon (B/Si) in the alloy composition ranges from 0.5 to 1.0.Type: GrantFiled: February 6, 2017Date of Patent: October 1, 2019Assignee: KENNAMETAL INC.Inventors: Matthew Yao, Abdelhakim Belhadjhamida, David A. Lee, Qingjun Zheng
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Publication number: 20190119789Abstract: In one aspect, cobalt-based alloys are described herein comprising composition and microstructure permitting a balance of hardness, toughness and wear resistance desirable for wood cutting applications. A cobalt-based alloy comprises a chromium rich carbide phase in an amount of 15-30 volume percent, a tungsten-rich phase in an amount of 9-15 volume percent and a balance of cobalt-rich solid solution matrix comprising nickel, chromium, vanadium and tungsten.Type: ApplicationFiled: October 25, 2017Publication date: April 25, 2019Inventors: Matthew Yao, Abdelhakim Belhadjhamida, Brad McLane
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Publication number: 20180304420Abstract: Methods of superalloy article repair are provided. In some embodiments, a method for repairing a nickel-based superalloy article comprises providing a layered assembly over a damaged region of the nickel-based superalloy article, the layered assembly comprising a nickel-based superalloy preform, an infiltration alloy preform and a melting point depressant component. The layered assembly is heated to form a nickel-based filler alloy metallurgically bonded to the damaged region, wherein primary carbide and secondary carbide phases are present in the nickel-based filler alloy in a combined amount of 0.5 to 10 vol. %.Type: ApplicationFiled: April 20, 2017Publication date: October 25, 2018Inventors: Qingjun ZHENG, Michael MEYER, Martin G. PEREZ, Abdelhakim BELHADJHAMIDA
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Publication number: 20170233852Abstract: Cobalt-based alloy compositions are described herein having properties compatible with thermal spray and sintering techniques. Such alloy compositions can provide claddings to a variety of metallic substrates having complex geometries, wherein the claddings exhibit desirable density, hardness, wear resistance and corrosion resistance. Briefly, an alloy composition described herein comprises 15-25 wt. % chromium, 15-20 wt. % molybdenum, 0-15 wt. % tungsten, 10-20 wt. % nickel, 2.5-3.5 wt. % boron, 2.5-4.5 wt. % silicon, 1-2 wt. % carbon and the balance cobalt, wherein a ratio of boron to silicon (B/Si) in the alloy composition ranges from 0.5 to 1.0.Type: ApplicationFiled: February 6, 2017Publication date: August 17, 2017Inventors: Matthew YAO, Abdelhakim BELHADJHAMIDA, David A. LEE, Qingjun ZHENG
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Patent number: 9339585Abstract: A surgical implant component comprising an implant component body manufactured from a Co-based substrate alloy comprising Co, Cr, Mo, Si, and C, and a coating on a bone-ingrowth surface of the component body manufactured from a Co-based coating alloy comprising Co, Cr, Mo, Si, C and B. The coating is a network of fused particles of the Co-based coating alloy with spherical particles, irregular aspherical particles, and between about 35 and about 70 volume % porosity. A method of manufacturing the foregoing surgical implant component.Type: GrantFiled: April 3, 2014Date of Patent: May 17, 2016Assignee: KENNAMETAL INC.Inventors: Matthew Yao, Rachel Collier, Abdelhakim Belhadjhamida, Danie DeWet
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Publication number: 20150283295Abstract: A surgical implant component comprising an implant component body manufactured from a Co-based substrate alloy comprising Co, Cr, Mo, Si, and C, and a coating on a bone-ingrowth surface of the component body manufactured from a Co-based coating alloy comprising Co, Cr, Mo, Si, C and B. The coating is a network of fused particles of the Co-based coating alloy with spherical particles, irregular aspherical particles, and between about 35 and about 70 volume % porosity. A method of manufacturing the foregoing surgical implant component.Type: ApplicationFiled: April 3, 2014Publication date: October 8, 2015Applicant: Kennametal Inc.Inventors: Matthew Yao, Rachel Collier, Abdelhakim Belhadjhamida, Danie DeWet
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Patent number: 8790571Abstract: A method for preparing an article is disclosed. The method comprises compacting a mixture of a first pre-alloyed powder and a lubricant to thereby form a green part having a green strength sufficient to permit mechanical handling; applying a slurry to a surface of the green part to thereby form a slurry coated green part, wherein the slurry comprises a second pre-alloyed powder, a binder, and a solvent; and heating the coated green part to a temperature below a solidus temperature of the first pre-alloyed powder and between a solidus temperature and a liquidus temperature of the second pre-alloyed powder to thereby solid state sinter the first pre-alloyed powder into a sintered core and to liquid state sinter the second pre-alloyed powder into a continuous alloy coating over the sintered core.Type: GrantFiled: May 28, 2009Date of Patent: July 29, 2014Assignee: Kennametal Inc.Inventors: Abdelhakim Belhadjhamida, Donald Williams, John Davies
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Publication number: 20140147595Abstract: A method of imparting high-temperature, degradation resistance to a component involving applying a metal slurry comprising a Co-based metallic composition comprising Co, Cr, W, Si, C, and B, a binder, and a solvent to a surface of the component, and sintering the Co-based metallic composition to form a substantially continuous Co-based alloy coating on the surface of the body.Type: ApplicationFiled: January 21, 2014Publication date: May 29, 2014Applicant: KENNAMETAL INC.Inventors: Abdelhakim Belhadjhamida, Joseph Overton, James B. C. Wu
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Patent number: 8668959Abstract: A method of imparting high-temperature, degradation resistance to a metallic component involving applying a metal slurry comprising a Co-based metallic composition containing Co, Cr, Mo, Si, and B, a binder, and a solvent to a surface of the component, and sintering the Co-based metallic composition to form a substantially continuous Co-based alloy coating on the surface of the body.Type: GrantFiled: January 16, 2013Date of Patent: March 11, 2014Assignee: Kennametal Inc.Inventors: Abdelhakim Belhadjhamida, Joseph Overton, James B. C. Wu
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Patent number: 8551395Abstract: A method for preparing a metal-based part, the method comprising applying a slurry to a surface of a temporary substrate to thereby form a slurry-coated temporary substrate, wherein the slurry comprises a Co-, Ni-, or Fe-based metal-based material, a binder, and a solvent; drying the slurry-coated temporary substrate to remove the solvent and to thereby form a coating layer having green strength; heating the coating layer to remove the binder; heating the coating layer to sinter the metal-based material into a continuous metal alloy layer; and separating the substrate from the coating layer. A powder metallurgy preform comprising a powder metallurgy green coating on a preform substrate.Type: GrantFiled: May 28, 2009Date of Patent: October 8, 2013Assignee: Kennametal Inc.Inventors: Abdelhakim Belhadjhamida, Donald Williams, John Davies
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Patent number: 8383203Abstract: A method of imparting high-temperature, degradation resistance to a component associated with an internal combustion engine involving applying a metal slurry comprising a Co-based metallic composition, a binder, and a solvent to a surface of the component, and sintering the Co-based metallic composition to form a substantially continuous Co-based alloy coating on the surface of the body. An internal combustion engine component comprising a metallic substrate and a Co-based metallic coating thereon which has a thickness between about 100 and about 1000 microns.Type: GrantFiled: December 15, 2005Date of Patent: February 26, 2013Assignee: Kennametal Inc.Inventors: Abdelhakim Belhadjhamida, Joseph Overton, James B. C. Wu
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Publication number: 20110067796Abstract: A method for preparing a metal-based part, the method comprising applying a slurry to a surface of a temporary substrate to thereby form a slurry-coated temporary substrate, wherein the slurry comprises a Co-, Ni-, or Fe-based metal-based material, a binder, and a solvent; drying the slurry-coated temporary substrate to remove the solvent and to thereby form a coating layer having green strength; heating the coating layer to remove the binder; heating the coating layer to sinter the metal-based material into a continuous metal alloy layer; and separating the substrate from the coating layer. A powder metallurgy preform comprising a powder metallurgy green coating on a preform substrate.Type: ApplicationFiled: May 28, 2009Publication date: March 24, 2011Applicant: DELORO STELLITE HOLDINGS CORPORATIONInventors: Abdelhakim Belhadjhamida, Donald Williams, John Davies
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Publication number: 20110070119Abstract: A method for preparing an article is disclosed. The method comprises compacting a mixture of a first pre-alloyed powder and a lubricant to thereby form a green part having a green strength sufficient to permit mechanical handling; applying a slurry to a surface of the green part to thereby form a slurry coated green part, wherein the slurry comprises a second pre-alloyed powder, a binder, and a solvent; and heating the coated green part to a temperature below a solidus temperature of the first pre-alloyed powder and between a solidus temperature and a liquidus temperature of the second pre-alloyed powder to thereby solid state sinter the first pre-alloyed powder into a sintered core and to liquid state sinter the second pre-alloyed powder into a continuous alloy coating over the sintered core.Type: ApplicationFiled: May 28, 2009Publication date: March 24, 2011Applicant: DELORO STELLITE HOLDINGS CORPORATIONInventors: Abdelhakim Belhadjhamida, Donald Williams, John Davies
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Publication number: 20060134455Abstract: A method of imparting high-temperature, degradation resistance to a component associated with an internal combustion engine involving applying a metal slurry comprising a Co-based metallic composition, a binder, and a solvent to a surface of the component, and sintering the Co-based metallic composition to form a substantially continuous Co-based alloy coating on the surface of the body. An internal combustion engine component comprising a metallic substrate and a Co-based metallic coating thereon which has a thickness between about 100 and about 1000 microns.Type: ApplicationFiled: December 15, 2005Publication date: June 22, 2006Applicant: Deloro Stellite Holdings CorporationInventors: Abdelhakim Belhadjhamida, Joseph Overton, James Wu