Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Making articles of indefinite length
Patent
1983-08-17
1986-07-08
Kight, John
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Making articles of indefinite length
419 20, 419 19, 419 12, 419 13, 75231, 75234, 75233, C22C 1900
Patent
active
045992142
ABSTRACT:
Disclosed are extruded dispersion strengthened metallic materials which are substantially free of texture as well as a method for producing such materials. The method comprises extruding a billet of dispersion strengthened metallic powder material comprised of one or more metals and one or more refractory compounds said powder material having a mean grain size less than about 5 microns and whose grain size is substantially stable at the extrusion conditions, through a die having an internal contour such that the material is subjected to a natural strain rate which is substantially constant as it pass through the die.
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Powder Metallurgy of Superalloys, G. H. Gessinger.
"Superplasticity: Prerequisites and Phenomenology" by Wadsworth, Oyama and Sherby, Interamerican Conference on Materials Technology, Aug. 12-15 (1980).
Exxon Research and Engineering Co.
Kight John
Moore M. L.
Naylor Henry E.
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