Room-temperature low-cycle fatigue behaviour of a Ni-base superalloy

Ganesh Sundara Raman, S. ; Padmanabhan, K. A. (1994) Room-temperature low-cycle fatigue behaviour of a Ni-base superalloy International Journal of Fatigue, 16 (3). pp. 209-215. ISSN 0142-1123

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/014211...

Related URL: http://dx.doi.org/10.1016/0142-1123(94)90005-1

Abstract

A nickel-base superalloy, Nimonic 90, was subjected to room-temperature low-cycle fatigue under constant total strain control. Cyclic stress response was investigated as a function of the total strain range. Hardening was attributed to slip band formation and softening to the shearing of γ' precipitates Slip band spacing decreased with increasing strain range. Two-slope behaviour or bilinearity seen in Coffin-Manson and cyclic stress-strain plots has been attributed to a change in the deformation mode with increasing strain range.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Cyclic Hardening and Softening; Slip Band Spacing; Shearing of γ' Precipitates; Bilibearity; Nimonic 90
ID Code:32346
Deposited On:06 Apr 2011 13:14
Last Modified:06 Apr 2011 13:14

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