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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium High Performance Steels
Presentation Title Strain Path Dependence of Microstructural Strain Path Development: An Experimental-numerical Study on Dual-phase Steels
Author(s) Julian Rackwitz, Onur Güvenç, Cem Tasan
On-Site Speaker (Planned) Julian Rackwitz
Abstract Scope In-situ SEM experiments revealed that microstructural strain paths can differ significantly from macroscopically imposed paths. For example, micro-level local strain paths ranging from uniaxial tension to plane-strain tension can be seen in a single material when the macroscopically imposed strain path is the former. Our previous work revealed the importance of local martensitic configurations on this behavior in dual-phase (DP) steels deformed in uniaxial tension. For a better understanding of the damage behavior in this material, this phenomenon should be investigated under multiaxial loading conditions as well. To fill this gap, we present here experiments using a custom-designed bulge test setup, and supporting crystal plasticity simulations, which enable us to discuss the influence of multiaxial loading conditions on the microstructural strain path development and, in turn, in the ductile damage process.
Proceedings Inclusion? Planned:
Keywords Other, Other, Other

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Early Stages of Liquid-metal Embrittlement in an Advanced High-strength Steel
Effects of Austenite Stability on Sheet Forming of Advanced High Strength Steels
First Principles Calculations of Structural Point-defect Calculations in Austenitic Stainless Steels
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