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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Advanced Solid Phase Processing Symposium
Presentation Title Shear-induced Diffusion and Intermixing: Atomic-level Perspective from Molecular Dynamics Simulations
Author(s) Peter V. Sushko, Brianna Collins, Tiffany Kaspar, Junhui Tao, Bharat Gwalani, Arun Devaraj, Tamas Varga, Yang He, Chongmin Wang, Aashish Rohatgi, Cynthia Powell, Suveen N. Mathaudhu
On-Site Speaker (Planned) Peter V. Sushko
Abstract Scope Materials processing approaches that bypass melting-solidification, such as high shear rate processing, offer an opportunity to generate a virtually unlimited variety of far-from-equilibrium phases with unique mechanical properties. In order to predictively explore this phase space, it is essential to reveal and learn to control mechanistic pathways of mass transfer, from single atom diffusion to collective effects, under non-equilibrium conditions. We generate atomistic insight into the mechanisms of mass transfer by performic molecular dynamics simulations for two types of immiscible systems. Comparison of the shear-induced dynamics in Cu/Cr heterostructures with an ideal and defect-containing interfaces allows us to identify precursor local structures that promote cross-interface intermixing and domain intergrowth. Simulations of Si particle reorientation in the Al host reveal an interplay of Al and Si diffusion processes at the particle/host interface, modulated by the local density fluctuations. These results are correlated with experimental observations of Cu/Cr and Al-Si shear-induced transformations.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Computational Approach with Experimental Support to Study the Effect of Interfacial Characteristics on The Performance of Dissimilar Joints via Friction Stir Scribe Technique
Advances in Deformation and Microstructure Evolution Understanding in Additive Friction Stir Deposition
Designer Additive Manufacturing Powders for Solid State Additive Manufacturing Processing
Dynamic Recrystallization Model Under Large Deformation During Solid Phase Processing
Electrical Conductivity and Wear Properties of Pure Copper Processed by High Pressure Sliding
Elucidating the Role of Flash Heating in Ultrasonic Consolidation of Powder and Foils
Fatigue Mechanisms of Aluminum Alloys Fabricated by Additive Friction Stir Deposition
Hybrid Cutting-Extrusion for Sheet Metal Production with Exceptional Microstructure Control
Impulse for Solid-State Processing
In-situ Studies of Impact-Induced Deformation and Solid-State Bonding in Cold Spray
Incremental Equal Channel Angular Pressing as a Tool for Manufacturing Large Ultra-fine Grained Copper Rods
Investigation of Metastable Structure Evolution in Friction Consolidation
J-8: Mechanical and Microstructural Properties of Lightweight Laminates Manufactured by Explosive Welding
Joining Dissimilar Materials via Rotational Hammer Rivet Technique
Laser Assisted Cold Spray of AISI 4340
Linear Friction Welding of Ti Components:Iinvestigation of Residual Stress and Fatigue Performance
MD Simulations of Deformation Mechanisms and Sub-grain Formation in Al-Si Alloys Under High Shear Deformation
Microstructural Analysis and Modeling of Grain Refinement During Tribometric Surface Deformation
Microstructure and Mechanical Properties of Solid-State Additive Friction Stir Processed Alloy 600 on 304L Stainless Steel
Multimodal Analysis of Microstructural Evolution of Metallic Alloys under Shear Deformation
Phase Transformations Induced by Large Plastic Deformations under High Pressure: Four-Scale Theory and in Situ Experiments
Plastic Flow Instability, Surface Folding and a Mechanochemical Effect in Large Strain Deformation of Metals
Recent Developments in Upscaling High Pressure Torsion
Shear-induced Diffusion and Intermixing: Atomic-level Perspective from Molecular Dynamics Simulations
Shear Assisted Solid Phase Processing of Aluminum Alloys
Simultaneously Reducing Mechanical Anisotropy and Enhancing Ductility in Mg Alloys by Advanced Solid Phase Processing
Smoothed Particle Hydrodynamic Simulations of Solid-phase AA6061 Additive Friction Stir Depositions
Strain in Friction Extrusion
Structural and Compositional Changes During Shear Assisted Processing of Materials
Structure-Property Correlations in Friction Stir Welded 304L Stainless Steel
Structure-property Relationships in Solid Phase Processing and Emerging Applications
Tailoring the Magnetic Properties of Nanostructured Alloys by Severe Plastic Deformation
Thermally Stable Nanostructured Immiscible Alloys via Friction Stir Processing
Thermo-mechanical Processing of ZK Series Magnesium Alloys for Improved Low Temperature Performance

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