|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Deformation and Damage Mechanisms in High Temperature Ni, Co and Fe-based Superalloys
||Effect of Tertiary Gamma Prime on Dwell Crack Growth Performance of a Recently Developed Co:Ni-base Superalloy
||Ioannis Bantounas, Vassili Vorontsov, Suyang Yu, Hangyue Li, Paul M Bowen, Mark C Hardy, David Dye
|On-Site Speaker (Planned)
Dwell fatigue crack growth tests have been performed on an experimental Co:Ni-base superalloy to investigate the mechanisms responsible for crack advance in microstructural conditions with and without tertiary gamma prime precipitates. The microstructure without tertiary gamma prime showed slower crack advance during the dwell. Site specific transmission electron microscopy foils were prepared using the focussed ion beam technique from each of the samples, at similar crack lengths and therefore, stress intensity factors. The surface oxide and underlying deformation mechanisms are analysed to elucidate the role of the tertiary gamma prime on the alloy's dwell crack growth behaviour.
||Planned: Supplemental Proceedings volume