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Powder-metallurgy superalloy strengthened by a secondary gamma phase.Description of experiments in which prealloyed powders of superalloy compositions were consolidated by extrusion after the strengthening by precipitation of a body-centered tetragonal gamma secondary Ni3 Ta phase. Thin foil electron microscopy showed that the mechanical properties of the resultant powder-metallurgy product were correlated with its microstructure. The product exhibited high strength at 1200 F without loss of ductility, after thermomechanical treatment and aging.
Document ID
19720029190
Document Type
Reprint (Version printed in journal)
Authors
Kotval, P. S. (Martin-Marietta Research Institute for Advanced Studies Baltimore, Md., United States)
Date Acquired
August 6, 2013
Publication Date
October 1, 1971
Publication Information
Publication: International Journal of Powder Metallurgy
Volume: 7
Subject Category
MATERIALS, METALLIC
Funding Number(s)
CONTRACT_GRANT: NAS3-13214
Distribution Limits
Public
Copyright
Other