Turning – Process of turning
Patent
1989-05-09
1990-05-01
Bell, Mark L.
Turning
Process of turning
407119, 409131, 408112, 408144, 408145, 501 95, B23C 100
Patent
active
049208381
ABSTRACT:
This invention relates to a cutting tool material with improved toughness behavior. The improved toughness behavior is obtained by using carefully selected reinforcing materials. The objectives of this invention are realized by simultaneously utilizing additives resulting in different toughenings mechanisms. By the simultaneous utilization of different toughening additives, synergistic effects occur giving the tool excellent material properties. The tool material of the present invention comprises reinforcing whisker additives of one dimensional single crystals with preferably different diameter and aspect ratios, two dimensional single crystals with different thickness and aspect ratios, and, in combination therewith, phase transformation additives such as ZrO.sub.2.
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Milewski, "Efficient Use of Whiskers in the Reinforcement of Ceramics", Advanced Ceramic Materials, vol. I, No. I (1986), pp. 36-41.
Brandt Nils G. L.
Thelin Anders G.
Bell Mark L.
Group Karl
Sandvik AB
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