|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials
||The Influence of Microstructure in Stress Relaxation Cracking
||Dafni Daskalaki Mountanou, Tom McAuliffe, Chris Bilsland, Alex Foden, Thomas Benjamin Britton
|On-Site Speaker (Planned)
||Dafni Daskalaki Mountanou
Stress relaxation cracking (SRC) limits the life of industrial plant in oil & gas, nuclear power and aerospace applications. Typically, SRC is managed through material selection combined with qualification with thermomechanical testing. The nano- to micro-scale mechanisms, which are influenced by the microstructure, which control SRC are yet to be mechanistically understood. We propose using advanced characterisation techniques (SEM, EDS, HR-EBSD, and in situ mechanical testing) to correlate damage evolution with carbide types and grain boundary structure in nickel based alloys (Inconel 800 series). In these alloys, we use thermomechanical treatment to control grain size, carbide distribution and carbide types and understand their influence using digital image correlation, EBSD, and slip trace analysis and link this back to real-world applications.