|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals, and Materials
||The Chemical Composition and Micro-mechanical Properties of Cooling γ’ Precipitates in a Polycrystalline Nickel Alloy
||Muzi Li, Fionn Dunne, Barbara Shollock
|On-Site Speaker (Planned)
Heat treatment of nickel superalloy has a great influence on the morphology and distribution of cooling γ’ precipitates, along with the lattice misfits between γ and γ’ phase, and consequently affects its mechanical behaviour. This study has been evaluating the effect of cooling rate on the gamma prime distribution and morphology and their influence on tensile and creep response of FGH96 alloy which is a second generation turbine disk nickel superalloy fabricated by powder metallurgy route. The relationships among the chemical composition, micro-mechanical properties and the size of cooling γ’ precipitates subjected to different cooling rates are to be studied by Atom Probe Tomography and in-situ nano-indentation on Atomic Force Microscope respectively.
This detailed study of chemical composition mechanical behaviour of polycrystalline nickel alloy at nano scale allows better understanding of its macroscopic mechanical performance, optimizing alloy composition and finding suitable heat treatment.
||Planned: A print-only volume