Year: 2022
Type: conference-paper
Abstract: Microstructure evolution of creep behaviours and the rupture mechanism of a nickel-based single crystal superalloy containing 3% Re under 1070 ºC/140MPa were studied systematically.Three stages can be divided as primary, steady and accelerated stages.Raft structure formed and dislocations aggregated in γ/γ' phase interfaces in the primary stage.Raft structure coarsens and topological inversion occurs, and dislocation network exhibits quadrilateral structure in the steady creep stage.Raft structure continues to coarsen and de-raft in the accelerated stage.High temperature creep process is a mixed fracture mode with aggregated micropores and local plastic deformation.
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
Awards: G1888929405, G2347494291
OpenAlex ID: W4281752425