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Meeting 2016 TMS Annual Meeting & Exhibition
Symposium Mechanical Behavior at the Nanoscale III
Presentation Title W-4: Characterization of Interface Dislocations at the Ferrite/Cementite Interface
Author(s) Jaemin Kim, Keonwook Kang, Seunghwa Ryu
On-Site Speaker (Planned) Jaemin Kim
Abstract Scope Despite of its importance in understanding the pearlitic transformation, the atomic structures and orientation relationships (ORs) of the ferrite/cementite interface (FCI) have not been revealed. Combining atomic simulation and atomically informed Frank-Bilby theory, we characterize the interface formation energy and detailed information of interface dislocations. We analyzed three traditionally reported ORs (Bagaryatsky, Isaichev, and Pitsch-Petch), and two recently found ORs (Near Bagaryatsky and Near Pitsch-Petch) using a recently developed Fe-C MEAM potential (L.S.I. Liyanage et al., Phys. Rev. B, (2014). 89.). Our results show that the interface formation energies of Bagaryatsky and Pitsch-Petch ORs are significantly higher than those of Isaichev, Near Bagaryatsky and Near Pitsch-Petch ORs, due to higher self-energies of interface dislocations. Our finding supports experimental results (Y.D. Zhang et al., J. Appl. Cryst., (2007). 40.) which exclude the existence of Bagaryatsky and Pitsch-Petch ORs based on accurate crystallographic measurements.
Proceedings Inclusion? Planned: A print-only volume


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A High Temperature In-situ Nanoindentation Study of Nanotwinned Silver Films
Ab Initio Modeling of Dislocation Core Properties in BCC and HCP Metals
Accurate Characterization of Interstitial Sites and Prediction of Adsorption Energetics of Hydrogen Trapping at Grain Boundaries in FCC Transition Metals: Space Tessellation Algorithm and Mechanics Model
Anisotropy in Nanolamellar Pearlitic Steels Investigated at the Micron Scale
Anisotropy, Size, and Aspect Ratio Effects in Micropillar Compression of Al-SiC Nanolaminate Composites
Atomic-scale Investigation on the Nucleation of Twinning-like Lattice Reorientation in Hexagonal Close-packed Metals
Capturing the Collaborative Strengthening Effects of Dislocations and Nanoscale Obstacles
Correlating In and Ex Situ Nanomechanical Measurements
Deformation Mechanisms and Instabilities in Metallic Multilayer on the Nanoscale
Ductile Crack Growth in Face-Centered Cubic Metal Nanosheets
Dynamic Behavior of a Nanocrystalline Cu-Ta Alloy
Dynamic Investigations of Dislocation-Self Point Defect Interactions in BCC Metals
Effect of Annealing on Grain Boundary Character and Attendant Tensile Behavior of Nanocrystalline Nickel Thin Films
Effect of Solutes on Dislocation Nucleation from Grain Boundaries in fcc Metals
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In Situ Atomic-scale Observation of Twinning Dominated Deformation in Nanoscale BCC Bi-crystals
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In Situ Study of Oxygen’s Influence on Deformation Twinning in Alpha-Titanium
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Mechanical Behavior of Nanoporous Gold and Silicon
Mechanical Behaviors of Cu-based Metallic Multilayers with Crystalline/Amorphous Layer Interfaces
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W-10: Dislocation Core Reconstruction Induced by Solute Atom Segregation in BCC Metals
W-11: Effect of Texture and Plastic Anisotropy on Stress-strain Response of Nanoscale Aluminum Films
W-12: Influence of Grain Refinement by Severe Plastic Deformation on Corrosion Behavior of Al5083
W-13: Investigating Structural, Physical and Mechanical Properties of Graphene/Polymer Hybrid Nanocomposites
W-14: Localized Hardness and Modulus Distribution within SiC Grain of a Reaction Bonded SiC/Si Ceramic Matrix Composite
W-15: Mechanical Behavior of a Two Phase Oxide on a Commercial Aluminum Alloy
W-16: Micromechanisms Governing Plastic Instability in Al-Li based Alloys
W-17: Microstructure and Strengthening Mechanisms of Ag/Fe Multilayers
W-18: Modelling and Calibration of a MEMS Tensile Stage for Elevated Temperature Experiments on Freestanding Metallic Thin Films
W-19: Nonlocal Crystal Plasticity Simulations of the Size-dependent Mechanical Response of fcc/bcc Multilayers
W-1: A Tale of Two Mechanisms: Strain-softening Versus Strain-hardening in Single Crystals under Small Stressed Volumes
W-20: Phase Transformation of Sub-Micrometer Shape Memory Alloys Thin Films Synthesized by Biased Target Ion Beam Deposition
W-21: Spherical Indentation Response of Ti64, Ni49.9Ti50.1 and Ni50.3Ti29.7Hf20 Shape Memory Alloys at Elevated Temperature
W-22: Stress Generation and Localization during Thin Film Coalescence Processes
W-23: Structure and Mechanical Properties of Nickel Nanoparticles And Their Epoxy Composites
W-24: The Effect of a Strut Size on the Strength of Nanoporous Cu Foams
W-25: The Microstructure and Mechanical Properties of Nanometer Al2O3/Cu Composite Fabricated by Internal Oxidation
W-26: Strain Rate Dependent Failure of Interfaces in Glass/Epoxy and Energetic Materials at Nano-Microscale via Dynamic Indentation
W-27: Evaluation of Mechanical Properties of Fe-Gd Alloys by Dynamic-Nano Indentation Method
W-28: Beam Induced Artifacts during in situ Transmission Electron Microscopy Deformation of Nanocrystalline and Ultrafine-grained Metals
W-29: Understanding the Relationship between Interface and Mechanical Properties of Cu/Nb Nanoscale Multilayers through In-situ Electromechanical Measurements
W-2: Analysis of Plastic Anisotropy in Nanotwinned Copper by a Statistical Dislocation Source Model
W-30: In Situ Nanoindentation of Fluorinated Ethylene Propylene Copolymers as Polyethylene Tetrafluoride Alternative
W-31: Determination of Unknown Single-crystal Orientation Using Transient Grating Spectroscopy and Molecular Dynamics Simulations
W-32: Deformation Behavior and Shear Band Evolution of Phase Separating Metallic Glass
W-33: Plastic Deformation in Nanocrystalline TiN at Ultra-low Stress: An In Situ Nanoindentation Study
W-3: Characterization of Grain Boundary Strain Transfer in High Purity Tantalum
W-4: Characterization of Interface Dislocations at the Ferrite/Cementite Interface
W-5: Competing Twinning Mechanisms during Mechanical Deformation of BCC Metals at Nanoscale
W-6: Computational Evaluation of Adhesion and Mechanical Properties of Nanolayered Diffusion Barrier Coating for Nuclear Applications
W-7: Coupled Atomistic-Continuum Framework of Developing Constitutive Relations of Crack Propagation
W-8: Crystal Size Effect on Twinning of Magnesium Microcrystals
W-9: Cyclic Response of Candidate Engineering Alloy Micro-beams

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