|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Fatigue in Materials: Fundamentals, Multiscale Modeling and Prevention
||Simulation and Experimental Validation of Damage Accumulation and Phase Transformation during Cyclic Mechanical Loading of a Metastable Austenitic Stainless Steel Considering Prehistory Effects
||Martina Zimmermann, Philipp Malte Hilgendorff, Andrei Grigorescu, Claus Peter Fritzen, Hans-Jürgen Christ
|On-Site Speaker (Planned)
Component reliability strongly depends on material microstructures which in turn are significantly influenced by manufacturing processes. Metastable austenitic stainless steels are of particular interest, since they allow for an adjustment of the local mechanical properties by taking advantage of a deformation-induced phase transformation. Experimental analyses on the static and cyclic strength of AISI 304 in different pre-deformed conditions were extended by modelling and simulation approaches. Two-dimensional microstructures consisting of a representative number of grains were modelled using the boundary element method and irreversible deformation was considered by mechanism-based approaches. As such, cyclic plastic deformation in shear bands and deformation-induced martensitic phase transformation were defined and implemented. Simulation results could directly be linked to the deformation evolution on the real specimen surfaces. Transient behavior mirrored by the specimens’ resonance behavior during fatigue testing correlated well with the change in damping behavior predicted on the basis of the simulation model.
||Planned: Supplemental Proceedings volume