Wear resistant, powder metallurgy cold work tool steel articles

Details Wear resistant, powder metallurgy cold work tool steel articles Wear resistant, powder metallurgy cold work tool steel articles

1997-04-09

1998-11-03

Wyszomierski, George

Metal treatment

Stock

Ferrous

75252, 420111, 420114, 420127, C22C 3812, C22C 3824

Patent

active

058302875

ABSTRACT:
A hot-worked, fully dense, wear resistant, vanadium-rich, powder metallurgy cold work tool steel article having improved impact toughness. This is achieved by controlling the amount, composition and size of the primary carbides and by insuring that substantially all the primary carbides remaining after hardening and tempering are MC-type vanadium-rich carbides. The article is produced by hot isostatic compacting of nitrogen atomized powder particles.

REFERENCES:
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patent: 4249945 (1981-02-01), Haswell et al.
patent: 4863515 (1989-09-01), Roberts et al.
patent: 5238482 (1993-08-01), Stasko et al.
patent: 5344477 (1994-09-01), Stasko et al.
patent: 5589011 (1996-12-01), Gonsalves
"Production Methods and Applications of Metallic Nano-Powders", World Powder Metallurgy Markets 1997, Gorham Advanced Materials, pp. 1-3, Nov. 1997.
ASTM Designation A600-89, Standard Specification for Tool Steel High Speed, 1989.

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