The Library
Analysis of shot-peening and residual stress relaxation in the nickel-based superalloy RR1000
Tools
Foss, B. J., Gray, S., Hardy, M. C., Stekovic, S., McPhail, D. S. and Shollock, Barbara A. (2013) Analysis of shot-peening and residual stress relaxation in the nickel-based superalloy RR1000. Acta Materialia, 61 (7). pp. 2548-2559. doi:10.1016/j.actamat.2013.01.031 ISSN 1359-6454.
Research output not available from this repository.
Request-a-Copy directly from author or use local Library Get it For Me service.
Official URL: http://dx.doi.org/10.1016/j.actamat.2013.01.031
Abstract
This work assesses the residual stress relaxation of the nickel-based alloy RR1000 due to thermal exposure and dwell-fatigue loading. A number of different characterization methods, including X-ray residual stress analysis, electron back-scattered diffraction, microhardness testing and focused ion beam secondary electron imaging, contributed to a detailed study of the shot-peened region. Thermal exposure at 700 °C resulted in a large reduction in the residual stresses and work-hardening effects in the alloy, but the subsurface remained in a beneficial compressive state. Oxidizing environments caused recrystallization in the near surface, but did not affect the residual stress-relaxation behaviour. Dwell-fatigue loading caused the residual stresses to return to approximately zero at nearly all depths. This work forms part of an ongoing investigation to determine the effects of shot-peening in this alloy with the motivation to improve the fatigue and oxidation resistance at 700 °C.
Item Type: | Journal Article | ||||||||
---|---|---|---|---|---|---|---|---|---|
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
Journal or Publication Title: | Acta Materialia | ||||||||
ISSN: | 1359-6454 | ||||||||
Official Date: | 2013 | ||||||||
Dates: |
|
||||||||
Volume: | 61 | ||||||||
Number: | 7 | ||||||||
Page Range: | pp. 2548-2559 | ||||||||
DOI: | 10.1016/j.actamat.2013.01.031 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |