Powder metallurgy high speed tool steel article and method of manufacture
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United States of America Patent
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Nov 14, 1989
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N/A
app pub date -
Mar 4, 1988
filing date -
Feb 25, 1986
priority date (Note) -
Expired
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Abstract
A powder metallurgy produced high speed tool steel article comprising a mixture of prealloyed high speed tool steel particles coated with a hard, wear resistant material, such as a carbide or nitride, mixed with prealloyed high speed tool steel uncoated particles; the particles are compacted to essentially full density and the hard, wear resistant material is at the boundaries of the coated particles and contained in a continuous matrix of the high speed tool steel. The article is produced by hot compacting a particle charge to essentially full density of a mixture of the coated and uncoated particles.
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