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Structure-property effects of tantalum additions to nickel-base superalloysThe characterization of the effect of Ta on the structure of Ni base superalloys, the determination of the effects of Ta (structure) variations on the mechanical, thermal, and oxidation behavior, and the identification of alloying elements which have potential as substitutes for Ta are investigated. Mar M247 type alloys are emphasized; nominal and analyzed compositions of ten alloys under study are given. X-ray and composition analysis are being used to determine the partitioning of alloying elements between gamma, gamma primes, and MC (cubic) as a function of Ta content. The diffusional interactions of the Mar M247-type alloys with as cast beta + gamma alloys are studied to determine the effects of Ta on alloy/coating degradation.
Document ID
19830003024
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Heckel, R. W.
(Michigan Technological Univ. Houghton, MI, United States)
Pletka, B. J.
(Michigan Technological Univ. Houghton, MI, United States)
Koss, D. A.
(Michigan Technological Univ. Houghton, MI, United States)
Jackson, M. R.
(GE Schenectady, N.Y., United States)
Date Acquired
August 11, 2013
Publication Date
October 1, 1982
Publication Information
Publication: NASA. Lewis Research Center COSAM (Conserv. Of Strategic Aerospace Mater.) Program Overview
Subject Category
Metallic Materials
Accession Number
83N11294
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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