Kennametal Inc.

James A Faust

Qingjun Zheng

Yixiong Liu

Mark J Rowe

Sudharsan Subbaiyan

Danie J De Wet

Michael J Meyer

Piyamanee Komolwit

Daniel Bourlotos

Danie J Dewet

In one aspect, methods of making freestanding metal matrix composite articles and alloy articles are described. A method of making a freestanding composite article described herein comprises disposing over a surface of the temporary substrate a layered assembly comprising a layer of infiltration metal or alloy and a hard particle layer formed of a flexible sheet comprising organic binder and the hard particles. The layered assembly is heated to infiltrate the hard particle layer with metal or alloy providing a metal matrix composite, and the metal matrix composite is separated from the temporary substrate. Further, a method of making a freestanding alloy article described herein comprises disposing over the surface of a temporary substrate a flexible sheet comprising organic binder and powder alloy and heating the sheet to provide a sintered alloy article. The sintered alloy article is then separated from the temporary substrate.

Methods of making metal matrix composite and alloy articles

In one aspect, composite articles are described herein employing cobalt-based alloy claddings exhibiting high hardness and wear resistance while maintaining desirable integrity and adhesion to surfaces of metallic substrates. A composite article, in some embodiments, comprises a metallic substrate and a composite cladding metallurgically bonded to one or more surfaces of the metallic substrate, the composite cladding including cobalt-based alloy having a chromium gradient, wherein chromium content increases in a direction from the composite cladding surface to an interface of the composite cladding with the metallic substrate.

Cladded articles and applications thereof

In one aspect, methods of making cladded articles are described herein. A method of making a cladded article, in some embodiments, comprises disposing over a surface of a metallic substrate a sheet comprising organic binder and powder metal or powder alloy having a solidus temperature at least 100&#xb0; C. less than the metallic substrate and heating the powder metal or powder alloy to provide a sintered metal or sintered alloy cladding metallurgically bonded to the metallic substrate.

Cladded articles and methods of making the same

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New Albany, IN, United States of America

James A Faust