The creep of alloy 617 at 700?°C: Material properties, measurement of strain and comparison between finite element analysis and digital image correlation

摘要

Highlights?Specimens of Alloy 617 have been tested at 700? °C to evaluate creep properties.?Creep of the alloy in multiaxial conditions is assessed Digital Image Correlation.?An FE model based on power law creep model is compared to real behaviour.?The model shows agreement with experimental evidence.AbstractFuture generations of power plants, such as the Ultra-Super-Critical (USC) power plants, are being designed to be operated at more extreme pressures and temperatures in order to achieve higher efficiency. One candidate material for components is Inconel alloy grade 617, a nickel based superalloy, which is expected to possess better creep resistance in comparison to other types of alloys?(). At present there is little available data or information about the behaviour of this material at the temperature of interest (700?°C) and hence there is a need to evalu