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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Design for Mechanical Behavior of Architectured Materials via Topology Optimization
Presentation Title Mechanical Properties of Work Hardened Steel Multilayers with Bimodal Grain Size
Author(s) Marcin Kwiecień, Janusz Majta
On-Site Speaker (Planned) Marcin Kwiecień
Abstract Scope The present study investigates the mechanical properties of work hardened microalloyed steels with a bimodal grain size distribution. Mechanical properties are characterized via hardness measurements combined with microstructure analysis. The microstructures of the investigated materials were shown to vary with work hardened layers thicknesses. We utilize Surface Mechanical Attrition Treatment (SMAT) to process bulk multilayered materials with bimodal grain size. This processing technique has the advantage of producing bulk quantities of structurally inhomogeneous materials. The strengthening mechanisms i.e. precipitation, solid solution and work hardening are analyzed for different structures: ultrafine-grained, produced by SMAT process structures with a layer thickness in the range of 0.01 - 0.05 mm and coarse grain structures with a layer thickness in the range of 1 – 3 mm. Mechanical properties and mechanical response were discussed in terms of the effects of chemical composition, morphology of the microstructure components and accumulated energy of the plastic deformation
Proceedings Inclusion? Planned: Supplemental Proceedings volume


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