|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Deformation and Damage Mechanisms in High Temperature Ni, Co and Fe-based Superalloys
||Influence of the Starting Microstructure on the Hot Deformation Behavior of a Low Stacking Fault Energy Ni-based Superalloy
||Joshua McCarley, Sammy Tin
|On-Site Speaker (Planned)
The presence of primary gamma prime precipitates in an experimental Nickel-based superalloy containing 24 wt. pct. Co was investigated. Billets heat treated at 1110°C and 1135°C respectively were subjected to hot compression tests at temperatures ranging from 1020°C to 1060°C and strain rates ranging from 0.001/s to 0.1/s. The hot deformed samples for both billet microstructures were also subjected to a super-solvus anneal heat treatment at 1140°C. This investigation sought to quantify and understand what effect the volume fraction of primary gamma prime precipitates has on the dynamic recrystallization behavior and subsequent length fraction ∑3 twin boundaries that formed upon annealing in the low stacking fault energy superalloy. Experimental results will be presented and potential implications for property enhancement via grain boundary engineering will be discussed.
||Planned: Supplemental Proceedings volume