About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
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Presentation Title |
Integrated Experimental-numerical Testing of “2D” Steel Microstructures |
Author(s) |
Tijmen Vermeij, Job Wijnen, Ron H.J. Peerlings, Marc G.D. Geers, Johan P.M. Hoefnagels |
On-Site Speaker (Planned) |
Tijmen Vermeij |
Abstract Scope |
Recent years saw advancement in simulations of plasticity, localizations and damage of various alloys and steels, using crystal plasticity or more advanced models. However, their experimental validation, particularly at the micro- and nanoscale, remains challenging due to (i) the unknown 3D subsurface microstructure, (ii) proper matching of boundary conditions and stress states, and (iii) the intricacy of damage mechanisms. In this work ‘2D’ tensile specimens, a few microns thick over a large area, are extracted from the bulk microstructure, in this case Dual-Phase (DP) steel. Rich data is obtained: (i) the full-field thickness profile by two-sided optical profilometry, (ii) two-sided microstructure maps by BSE and EBSD, (iii) high-resolution strain maps from SEM-DIC, and (iv) careful 3D alignment of all data. The full 3D crystal structure is meshed and the material behavior is modelled using two novel CP models, which can handle discrete plasticity and anisotropic martensite plasticity, closely matching experiments. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Iron and Steel, Modeling and Simulation |