Process – structure – property relations in DP800 investigated using representative volume elements
Niklas C. Fehlemann, Dorothea Czempas, Maximillian Hribsek, Sebastian Münstermann
Abstract. Dual-phase (DP) steels play a crucial role for various applications due to their good balance of formability and strength. This paper explores the influence of the pass reduction during cold rolling on the microstructure and mechanical properties of a DP800 steel. A ferritic-pearlitic base material was cold rolled with varying pass reductions, followed by intercritical annealing at a constant temperature. Microstructural characterization was performed using light optical microscopy and electron backscatter diffraction, while tensile tests provided insights in the macroscopic mechanical property. Statistically representative volume elements (sRVE), generated with the in-house DRAGen RVE-generator were employed in conjunction with crystal plasticity simulations to analyze the strain partitioning and the damage behavior. Results show that pass reduction during cold rolling significantly affects microstructure and strain partitioning, influencing damage tolerance and therefore also the formability. Increasing the number of passes leads to more homogenous stress and strain distribution with less damage. These findings highlight the importance of process design in optimizing DP steel damage tolerance.
Keywords
Dual Phase Steel, Representative Volume Elements, Damage, Microstructure, Formability
Published online 5/7/2025, 10 pages
Copyright © 2025 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Niklas C. Fehlemann, Dorothea Czempas, Maximillian Hribsek, Sebastian Münstermann, Process – structure – property relations in DP800 investigated using representative volume elements, Materials Research Proceedings, Vol. 54, pp 995-1004, 2025
DOI: https://doi.org/10.21741/9781644903599-107
The article was published as article 107 of the book Material Forming
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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