Title

RECENT DEVELOPMENTS IN CEMENTED CARBIDES – A COMMERCIALLY SUCCESSFUL METAL MATRIX COMPOSITE

RECENT DEVELOPMENTS IN CEMENTED CARBIDES – A COMMERCIALLY SUCCESSFUL METAL MATRIX COMPOSITE

Authorship

CHAWLA, KRISHAN

CHAWLA, KRISHAN

I am this author

DOI

10.5151/2594-5327-35504

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Abstract

Cutting tool inserts or drill bits consisting of tungsten carbide (WC) particles distributed in cobalt (Co), called cemented carbides, are nothing but highly successful metal matrix composites. These particulate metal matrix composite combine aspects of a brittle ceramic and a ductile metal to produce a composite with properties that neither one of the individual components has. In this presentation, I shall provide a brief survey of their wide range of applications and describe our work involving extension of the microstructural flexibility and the range of properties of the individual components by means of a hybrid metal matrix composite consisting of discrete granular composite reinforcements in a metal matrix. We call it double cemented carbide (DCC) composite. It promises to be a general extension of the idea of composites. Results on the processing, microstructure, and properties of such composites will be presented.

Cutting tool inserts or drill bits consisting of tungsten carbide (WC) particles distributed in cobalt (Co), called cemented carbides, are nothing but highly successful metal matrix composites. These particulate metal matrix composite combine aspects of a brittle ceramic and a ductile metal to produce a composite with properties that neither one of the individual components has. In this presentation, I shall provide a brief survey of their wide range of applications and describe our work involving extension of the microstructural flexibility and the range of properties of the individual components by means of a hybrid metal matrix composite consisting of discrete granular composite reinforcements in a metal matrix. We call it double cemented carbide (DCC) composite. It promises to be a general extension of the idea of composites. Results on the processing, microstructure, and properties of such composites will be presented.

Keywords

Cutting tool inserts or drill bits consisting

.