Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1601278 | Intermetallics | 2009 | 7 Pages |
Abstract
The flow stress of Nickel-based γ/γ′ superalloys containing up to 73 vol.% of Ni3Al precipitates is calculated by dislocation dynamics simulations of a dislocation pair gliding on {111} planes, for temperatures up to 1000 K. It is calculated for different composition-related parameters (friction stress and APB energy), as well as for different microstructural parameters (channel width, precipitate volume fraction and the geometry of the intersection of the {111} glide plane with the precipitate). The emphasis is on the bowing-assisted cutting regime, which is the prevalent deformation mechanism observed in the simulations.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
A. Vattré, B. Devincre, A. Roos,