The Library
Neutron diffraction study of strain and stress induced by thermomechanical fatigue in a single crystal superalloy
Tools
Wu, Erdong, Zhang, Jun, Chen, Bo, Sun, Guangai, Ji, V., Hughes, Darren J. and Pirling, T. (2008) Neutron diffraction study of strain and stress induced by thermomechanical fatigue in a single crystal superalloy. Journal of Physics: Condensed Matter, 20 (10). 104255. doi:10.1088/0953-8984/20/10/104255 ISSN 0953-8984.
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/10.1088/0953-8984/20/10/104255
Abstract
The relationship between internal stress and thermomechanical fatigue (TMF) in a Ni-based single crystal superalloy grown along the [001] axis was studied by neutron diffraction. The macroscopic internal stress along the loading axis generally increases with the TMF deformation. However, the internal stress in the precipitate γ' phase increases more significantly than that in the matrix γ phase and contributes more to the stress growth. During the TMF, the stress in the γ' phase is larger than that of the γ phase, thus the γ' phase is stretched whereas the γ phase is compressed along the loading axis. The microstrains in the γ and γ' phases also increase during TMF, but the trend does not follow that of the stresses. The evolutions of the internal stresses and microstrains, and the associated microstructure changes, appear to indicate that the failure by TMF is mostly caused by the residual stress concentration in the hardened γ' phase.
Item Type: | Journal Article | ||||
---|---|---|---|---|---|
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
Journal or Publication Title: | Journal of Physics: Condensed Matter | ||||
Publisher: | Institute of Physics Publishing Ltd. | ||||
ISSN: | 0953-8984 | ||||
Official Date: | 19 February 2008 | ||||
Dates: |
|
||||
Volume: | 20 | ||||
Number: | 10 | ||||
Article Number: | 104255 | ||||
DOI: | 10.1088/0953-8984/20/10/104255 | ||||
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 |