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The outstanding mechanical properties of high-manganese steels (HMnS) are aresult of their high strain-hardenability. That is facilitated by strongsuppression of dynamic recovery, predominant planar glide, and the activationof additional deformation mechanisms, such as transformation-induced plasticity(TRIP) and twinning-induced plasticity (TWIP). However, depending on the finalapplication, strongly differing requirements on the mechanical properties ofHMnS are of relevance. In order to design HMnS for specific applications,multi-scale material simulation under consideration of the processingconditions that allows for prediction of the final mechanical properties isrequired, i.e. strain-hardening engineering based on integrated computationalmaterials engineering (ICME). In this work, we present an approach that employsalloy selection by stacking-fault energy calculations, which enablesactivation/suppression of specific deformation mechanisms. Tailoredmanufacturing, e.g. by thermo-mechanical treatment, severe plastic deformationor additive manufacturing, provides possibilities to make use of thestrain-hardenability during and after processing to define the mechanicalproperties. A computational approach for alloy and process design will bediscussed.

Application-oriented strain-hardening engineering of high-manganese steels