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Inhomogeneous deformation in INCONEL 718 during monotonic and cyclic loadingsThe paper concentrates on the relation between microstructural observations of the dislocation structures and the macroscopic deformation responses of both aged and homogenized precipitate-hardened alloys at room temperature. The deformation responses are compared to the cyclic deformation response of an aged precipitate-hardened alloy. Early in the deformation, one deformation band per grain and little evidence of work hardening are observed; with increased deformation, work hardening begins, more bands nucleate, and their spacing becomes similar to that in the aged material. It is pointed out that the degree of coarseness of inhomogeneous deformation is not a result of a softening process within the bands due to precipitate shearing, but it is a function of the amount of work hardening within the bands.
Document ID
19910037664
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Worthem, D. W.
(NASA Lewis Research Center; Sverdrup Technology, Inc. Cleveland, OH, United States)
Robertson, I. M.
(NASA Lewis Research Center Cleveland, OH, United States)
Socie, D. F.
(NASA Lewis Research Center Cleveland, OH, United States)
Altstetter, C. J.
(Illinois, University Urbana, United States)
Leckie, F. A.
(California, University Santa Barbara, United States)
Date Acquired
August 15, 2013
Publication Date
December 1, 1990
Publication Information
Publication: Metallurgical Transactions A - Physical Metallurgy and Materials Science
Volume: 21A
ISSN: 0360-2133
Subject Category
Metallic Materials
Accession Number
91A22287
Funding Number(s)
CONTRACT_GRANT: DE-AC02-76ER-01198
Distribution Limits
Public
Copyright
Other

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