|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals, and Materials
||In-situ Diagnostics of Damage Accumulation in Nickel-based Superalloy
||Koji Kageyama, Fauzan Adziman, Tan Sui, Alexander Korsunsky, Roger Reed
|On-Site Speaker (Planned)
Nickel-based superalloys are designed to sustain harsh environment, e.g. for jet engines in aerospace, or gas and steam turbines in energy industries. The high demand is owing to their high performance at elevated temperatures, in terms of strength, creep, and fatigue behaviours. Nevertheless, at such severe conditions, much effort is still needed to capture, understand, and enhance their fracturing mechanisms for which various post-mortem or ex-situ analyses of their damaged materials have always been the norm. To circumvent these inherited deficiencies, we develop a new in-situ XCT system offering superior resolution suitable for testing at high temperatures – verified up to 800 degrees C. The novel system is also able to capture real-time evolution of crack initiation and propagation. Distinctive cracking evolutions were detected by inherently different alloy compositions tested under uniaxial tensile loadings at different strain-rates.
||Planned: None Selected