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The effect of heat treatment on microfissuring in alloy 718Changes in the microfissuring susceptibility of alloy 718 due to solution annealing and age hardening are studied. The effects of Ni3Nb (delta) precipitation during solution annealing and gamma-prime + gamma-double-prime precipitation during age hardening on microfissuring are investigated. It is observed that solution annealing reduces microfissuring and age hardening increases it, and the two precipitates do not affect microfissuring susceptibility. Potential causes for the detected intergranular segregation of the alloy are discussed.
Document ID
19870035061
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Thompson, R. G.
(Alabama Univ. Birmingham, AL, United States)
Dobbs, J. R.
(Alabama Univ. Birmingham, AL, United States)
Mayo, D. E.
(Alabama, University Birmingham, United States)
Date Acquired
August 13, 2013
Publication Date
November 1, 1986
Publication Information
Publication: Welding Journal, Research Supplement
Volume: 65
ISSN: 0043-2296
Subject Category
Metallic Materials
Accession Number
87A22335
Funding Number(s)
CONTRACT_GRANT: NAS8-34962
Distribution Limits
Public
Copyright
Other

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