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Meeting 2016 TMS Annual Meeting & Exhibition
Symposium 2016 Technical Division Young Professional Poster Competition
Presentation Title YP-10: Understanding of Deformation Twinning Characteristics in HCP Materials
Author(s) M. Arul Kumar, Irene J. Beyerlein, Carlos Tome
On-Site Speaker (Planned) M. Arul Kumar
Abstract Scope Deformation twinning is an important mode of plastic deformation in Hexagonal Close Packed (HCP) materials. Twinning is a sequential process of nucleation, propagation, growth and sometimes detwinning. Twinning is governed by both microstructural and mechanical responses. In this work, we applied a recently developed full-field Fast-Fourier-Transform (FFT) model, which accounts for twinning shear transformation to understand the role of local mechanical responses on twinning. FFT model successfully predicts the local stresses associated with twinning in HCP materials. Using the predicted local mechanical responses, we developed an understanding towards the following characteristics of {10-12} tensile twins: i) the effect of grain size on twin growth process; ii) the role of local stress state on twin-twin junction formation; iii) the influence of twin-twin junctions on de-twinning process; and iv) the twin thickness at grain boundary is larger for crossing twins. The developed understanding towards deformation twinning characteristics will be linked with predictive models.
Proceedings Inclusion? Definite: None Selected


YP-10: Understanding of Deformation Twinning Characteristics in HCP Materials
YP-1: Removal of Iron from Cu Ore for the Production of Copper Sulfide
YP-2: The Effects of Quartz Amount on the Physical and Microstructural Properties of Tile Bodies
YP-3: Optimization of the Morphology of Volatile Organic Compound Sensors Based on Polymer-metal Nanocomposites
YP-4: A Study on Mechanical Properties of Particulate Reinforced 6063 Aluminium Alloy
YP-5: DIC In-Situ of Tensile Deformation and Synchrotron Diffraction for the Accurate Investigation of Austenite-to-Martensite Transformation in AHSSs
YP-6: Refinement of Primary and Eutectic Silicon in Hypereutectic Al-Si Alloys with Electromagnetic Stirring
YP-7: Novel Conductive Scanning Probe Microscopy (SPM) Probes with Reduced Capacitive Coupling
YP-8: Study of Reduction of Zinc Ferrite Contained in Electric Arc Furnace Dusts by CO - CO2 Gas Mixtures
YP-9: Effect of Neutron Irradiation on Friction Stir Processed ODS Alloys

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