Results 231 to 240 of about 13,160 (287)

Carbide grain growth in cemented carbides

Acta Materialia, 2011
Abnormal grain growth is often observed in cemented carbides during sintering, but cannot be understood in terms of the classical LSW theory.
Karin Mannesson, Johan Jeppsson, Annika Borgenstam, John Ågren   +3 more
openaire   +1 more source

Reinforcement of tungsten carbide grains by nanoprecipitates in cemented carbides

Nanotechnology, 2016
In contrast to the conventional method that obtains a high fracture strength of tungsten carbide-cobalt (WC-Co) cemented carbides by reducing WC grain size to near-nano or nanoscale, a new approach has been developed to achieve ultrahigh fracture strength by strengthening the WC grains through precipitate reinforcement.
Xingwei, Liu, Xiaoyan, Song, Haibin, Wang, Chao, Hou, Xuemei, Liu, Xilong, Wang   +5 more
openaire   +2 more sources

CEMENTED CARBIDES

Industrial Lubrication and Tribology, 1986
Cemented carbides are probably the most successful composite materials ever produced. They are best known for their outstanding wear resistance but many of their unusual properties remain largely unexploited. The author, Research and Development manager of Sandvik Hard Materials Ltd, Coventry, outlines the distinctive characteristics of this range of ...
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Cemented Carbides

1990
Abstract Cemented carbides belong to a class of hard, wear-resistant, refractory materials in which the hard carbide particles are bound together, or cemented, by a soft and ductile metal binder. The performance of cemented carbide as a cutting tool lies between that of tool steel and cermets.
A.T. Santhanam, P. Tierney, J.L. Hunt
openaire   +1 more source

Cemented Carbides

1989
Abstract This article discusses the manufacturing steps and compositions of cemented carbides, as well as their microstructure, classifications, applications, and physical and mechanical properties. It provides information on new tool geometries, tailored substrates, and the application of thin and hard coatings to cemented carbides by ...
A.T. Santhanam, P. Tierney
openaire   +1 more source

Dust in the Cemented Carbide Industry

American Industrial Hygiene Association Journal, 1971
The paper reports on the air concentrations of cobalt at typical operations in the cemented carbide (hard metal) industry. Such samples were obtained in seven different plants.
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Porosity in Cemented Carbide

Powder Metallurgy, 1977
This paper surveys the influence and causes of pores in cemented carbide and describes methods used for its description and measurement. Porosity scales, counting and measuring methods, radiography, and ultrasonic inspection are described and discussed.
S. Amberg, H. Doxner
openaire   +1 more source

Microstructures of cemented carbides

Materials & Design, 2001
Abstract An overview is given of the detailed microstructure of cemented carbides of types WC–Co and WC–MC–Co and of titanium carbo-nitride based cemented carbides (cermets). The manufacturing process is first descibed, and the changes in composition that occur during manufacturing are discussed.
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Cemented Carbides

Abstract This article presents fractographs of cemented carbides that failed by overload. A pair of images shows brittle fractures of 97WC-3Co alloys tested under four-point bending.
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Cemented Carbides and Cermets

1998
AbstractCemented carbides belong to a class of hard, wear-resistant, refractory materials in which the hard carbide particles are bound together, or cemented, by a ductile metal binder. Cermet refers to a composite of a ceramic material with a metallic binder.
openaire   +1 more source