|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||Advanced Characterization of High-temperature Alloys: Phase Evolution during Manufacturing and Service-induced Deformation
||Phase- and Orientation-specific Mechanical Response during High-temperature Deformation of a γ' Strengthened Ni-based Superalloy
||Nitesh Raj Jaladurgam, Stefanus Harjo, Magnus Colliander
|On-Site Speaker (Planned)
We use in-situ neutron diffraction to investigate the load redistribution between and within γ and γ’ at 650 and 730 °C as a function of particle size in a low γ’ volume fraction Ni-base superalloy, Haynes 282. We observe a complicated evolution of the load redistribution which depends on particle size, temperature, and crystallographic orientation. This is particularly evident during the necking phase of samples with coarse (200 nm) γ’ particles, where the gamma matrix showed strong orientation effects, and the load transfer from γ to γ’ was drastically affected by temperature. The observations indicate that the damage evolution (softening beyond geometric necking effects and micro-crack/pore formation) during high temperature deformation is strongly phase-dependent and anisotropic.
||Mechanical Properties, High-Temperature Materials,