In the project area B "process development and sampling production" the applicability of the classical production processes and their influence on the microstructure and the characteristics of Fe-Mn-C alloys is examined. Here the focus is put, aside from the experimental simulations of solidification, on the warm and cold forming processes as well as on annealing processes and their numerical simulations.
In project area B the materials for the SFB are produced and the process windows for the various process stages are developed. The challenge here is the adaptation of the process chains to higher aluminum contents (MBIP steels) and two-phase materials (medium manganese steels) as well as further processing to the component.
The short process route of strip casting of high manganese steels developed in the SFB is used and further developed in B6 for sample production. In B1 and B2, the block casting route is also tracked for special tasks. In addition, critical aspects of continuous casting are analyzed in B1 for the transferability of the results to the production route preferred in the industrial environment. Here, the main challenges lie in the metallurgical process technology, the reduction of segregations and the crack suppression. The understanding of the structure which can be set during further processing by means of cold rolling and heat treatment and the mechanical properties resulting is expanded in B4. To this end, the existing models are further developed with regard to the special features of the new alloys. Furthermore, the simulation activities are continuously accompanied by experimental work (investigation of microstructure and texture development during heat treatment) in order to determine input data for the simulations and to validate the results of the simulations. The aim is to develop a robust simulation methodology that allows the prediction of the desired microstructure in terms of grain size, grain morphology, grain boundary character and texture. As a result, the microstructure and the mechanical properties (in particular the solidification behavior) can be adapted to the respective application by means of alloy development and targeted process control. Thus, the versatile adaptive strengthening behavior of the high and medium manganese steels in B2 is to be used for the forming of components and the design of crash-relevant lightweight structures.
Part Projects of Project Area B