Abstract: The effect of thermo-mechanical process history on microstructure development and stress corrosion cracking behavior of solution annealed Type 304 stainless steel has been investigated. Metallographic screening and electron backscatter diffraction analysis has been carried out to characterize microstructure after thermo-mechanical processing treatments. The application of cold reductions between 5% and 20%, followed by solution annealing treatments resulted in different microstructure characteristics. Mixed mode trans-/intergranular stress corrosion fractures were observed, and heat treatment at 900°C resulted in changes of failure mode to predominantly transgranular.
Authors: Osama M. Al Yousif
Keywords:Stress Corrosion Cracking, Transgranular, Intergranular, EBSD, Metallography, Stainless Steel