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Dispersion strengthened nickel-yttria sheet alloy produced from comminuted powdersAn investigation was conducted to determine whether a nickel matrix with yttria as a dispersoid could be produced by a comminution and blending (wet attrition-NASCAB) approach. Concentration of yttria, powder cleaning temperature, screening (sieving) of the powders, and amount of thermomechanical working were major variables. Tensile strength and stress-rupture life at 1093 C were determined. A product containing 4v/o Y2O3, cleaned at 315 or 371 C with screening exhibited 1093 C tensile strength equivalent to NASCAB Ni-4ThO2 and to commercially produced thoriated nickel sheet.
Document ID
19730015849
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Sikora, P. F. (NASA Lewis Research Center Cleveland, OH, United States)
Quatinetz, M. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 2, 2013
Publication Date
January 1, 1973
Subject Category
Materials, Metallic
Report/Patent Number
NASA-TM-X-68245
E-7495
Meeting Information
Meeting: Intern. Powder Metallurgy Conf.
Location: Toronto
Country: Canada
Start Date: July 15, 1973
End Date: July 20, 1973
Sponsors: Am. Powder Metallurgy Inst. and the Metal Powder Ind. Federation
Accession Number
73N24576
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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