|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||Advanced Characterization of High-temperature Alloys: Phase Evolution during Manufacturing and Service-induced Deformation
||In Situ High Energy Diffraction Investigation of the Dynamic and Meta-dynamic Recrystallization of Ni Base Superalloy Haynes 282
||Emil Eriksson, Olof Bäcke, Yao Hu, Magnus Hörnqvist Colliander
|On-Site Speaker (Planned)
In situ high energy synchrotron diffraction measurements of the dynamic and meta-dynamic recrystallization of Ni-base superalloy Haynes 282 during hot compression have been performed. Samples were heated inductively and we investigated temperatures ranging from 1080 – 1120 °C, with strain rates 0.005 and 0.05 s-1 and strains between 0.1 to 0.5. All samples were also subjected to a 120 s static hold at target temperature directly after compression to investigate the meta-dynamic recrystallization of the partially recrystallized microstructures. To track the (m)DRX process we used a small beam size (0.4x0.4 mm), resulting in individual Bragg spots (corresponding to individual grains) being resolvable on the downstream area detector. This allowed emergence and evolution of recrystallized grains to be measured during the process. Compared to traditional microstructural investigations of interrupted compression tests, the current approach provides 0.1 s time resolution without sample-to-sample variations.