Quantitative prediction of yield strength of highly alloyed complex steel using high energy synchrotron X-ray diffractometry

The overwhelming impact of complex-phase microstructures to mechanical response in multiphase steels requires accurate constitutive properties the individual phases. However, precise prediction phase their is critical and sophisticated, commonly multiscale characterizations numerous approximations. In this work, by employing full information semi-empirical analytical models, we accurately predict yield strength deformed variants Ce-modified SAF2507 super duplex stainless steel (SDSS). High energy synchrotron X-ray diffraction (HE-SXRD) reveals fractions major phases along with secondary Cr2N eutectic CexFey. Average lattice strain/crystallite size austenite ferrite/martensite from measured volume estimated through Williamson-Hall method. A unique composite strengthening type model used estimate taking contributions all phases, grain sizes, stored dislocation densities, solid solution, precipitates. Close agreement between reconstructed experimental observed for several cold cryogenic rolled SDSS. combination HE-SXRD offers a time-effective virtual design pathway engineer high-strength steel.