Professor Dierk Raabe, Chief Executive, Max-Planck-Institut fuer Eisenforschung, Duesseldorf, Germany

Integrated experimental and simulation analysis of dual phase steel micromechanics
When Nov 10, 2014
from 02:00 PM to 03:00 PM
Where LR8, IEB Building, Engineering Science
Contact Name
Contact Phone 01865-283302
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C. C. Tasan, M. Diehl, D. Yan, C. Zambaldi, P. Shanthraj, F. Roters, D. Raabe
Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Str. 1, 40237 Düsseldorf, Germany

The mechanical response of multi-phase alloys is governed by the microscopic strain and stress partitioning behavior among microstructural constituents. Yet, due to limitations in the characterization of the partitioning that takes place at the sub-micron scale, microstructure optimization of such alloys is typically based on evaluating the averaged response, referring to e.g. macroscopic stress-strain curves. Here, a novel experimental–numerical methodology is introduced to strengthen the integrated understanding of microstructure and mechanical properties, enabling joint analyses of deformation-induced evolution of the microstructure, and the strain and stress distribution therein, down to sub-micron resolution. The experiments and simulations demonstrate good correlation in the proof-of-principle study conducted here on a martensite–ferrite dual-phase steel, and deviations are discussed in terms of limitations of the techniques involved. Overall, the presented integrated computational materials engineering (ICME) approach provides vast amount of well-correlated structural and mechanical data that enhance our understanding and design capabilities of multi-phase alloys.