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Meeting MS&T22: Materials Science & Technology
Symposium Innovative Process Design and Processing for Advanced Structural Materials
Presentation Title A Study on Migrating Boundary Induced Plasticity Using Molecular Dynamics Simulation for Pure Iron
Author(s) Simoon Sung, Jaehoon Jang, Yanghoo Kim, Heung Nam Han
On-Site Speaker (Planned) Simoon Sung
Abstract Scope It has been observed that a permanent deformation occurs during solid-solid phase transformation of ferrous or other alloys, even when subjected to stress much lower than the yield stress. This phenomenon, which is known as transformation plasticity or transformation induced plasticity, is known to cause many engineering problems. Interestingly, a similar phenomenon was observed during recrystallization and grain growth. To explain the phenomenon, the concept of migrating boundary induced plasticity (MIP) had been suggested. In this presentation, we used a molecular dynamics (MD) simulation to confirm the presence of a significant amount of permanent deformation that occurs during grain growth under external stress. And it was found that this permanent deformation is a thermal activation process, which is consistent with the MIP. Based on these results, a newly modified phenomenological MIP model was proposed, and this modified MIP model was able to explain the permanent deformation obtained by MD results.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A New Method for Measurement of Flow Stresses at High Strain Rates and Temperatures for Improved Simulation of Friction Stir Welding
A Study on Migrating Boundary Induced Plasticity Using Molecular Dynamics Simulation for Pure Iron
Atomic-scale Unique Interface Observation of η/Al in Al-Zn-Mg Alloy
Co-design of 3D Printing, Parts and Microstructure
Effects of Electric Current on the Plastic Deformation Behavior of Pure Copper, Iron, and Titanium
Electric Current-induced Phenomena in Materials
Enhancement of Mechanical Properties in Nanoporous Gold
Improvement of Mechanical Properties of Metallic Materials by Multilayered Structure
K--8: Effect of Heat Treatment in 9% Ni Steels on Cryogenic Impact Toughness
K-12: Improvement of Structural Stability and Characterization of Nanoscale Defects in Amorphous Alumina Thin Film
K-13: Integrated Welding and Thermal Processing for Ferritic/Martensitic Steels
K-14: MatILDaź - Application of a User-oriented Material Database
K-15: Porous Silicon Carbide (SiC) for Composite Core Sandwich Structures
K-16: Solid-state Bulk Joining of Dissimilar Metal Alloys by Electrically Assisted Pressure Joining
K-17: Study on the Behavior of Fine Particles by the Vibration of the Medium with Polluted Air Inside the Rigid Housing
K-18: The Friction and Product Quality in Dry Metal Forming with Volatile Media
K-2: Automated Process Design for Heat Shrink Casing of Welded Parts of Buried District Heating Pipe
K-4: Development of a Gradient Structural Material Using Electrically Assisted Pressure Joining of Fe-Mn-Al-C Lightweight Steels
K-5: Development of a Self-heated Composite Tool for Out of Autoclave and Out of Oven Cure of Thin Ply Composite Structures
K-6: Development of Highly Stretchable and Impermeable Encapsulation by Applying Wavy-structure to Thermally Grown Silicon Dioxide
K-7: Discontinuous Yielding Behavior Due to Twinning Accompanied by Abnormal Grain Growth in Fine-grained Copper
K-9: Enhanced Flaw-tolerance of Nanoporous Gold with Grain Boundary Plasticity
Manufacture of Advanced 3D Composites Using a New 3D Weaving Technique and Their Design Using a Neural Network
Mechanical Properties and Reliability of Nanolayered Stretchable Interconnect with Nanocrystalline Copper and Ternary Metallic Glass
Mechanisms Driving Defect Formation in High Power Laser Welding of Nickel Alloys
Microstructure-based Fatigue Life Modeling Methodology for Ferritic-pearlitic Hypo-eutectoid Steels
Modern Supercomputing for Accelerating the Design of High-temperature Aluminum Alloys
Monte Carlo Simulations for Microstructure Evolution via Diffusion
Novel Solid-State Metal Powder Fabrication Process for Feedstock of Metal Matrix Composites Additive Manufacturing
On the Micromechanical Response of a Mild Steel during Abrupt Strain Path Changes (SPCs)
Recent Nanoindentation Studies on Innovative Process Design for Advanced Structural Materials
Residual Stress in Steel H-beam Produced by Hot-rolling and QST Investigated by Instrumented Indentation Testing
Structural Evolution during Nanostructuring and Heating of an Additive-manufactured Stainless Steel Examined by X-ray and In-situ Neutron Diffraction Analyses
Uniaxial Tensile Behavior After Baking Treatment in a Low Carbon Steel Accompanying Inhomogeneous Plastic Yielding
Virtual Thermo-mechanical Process Design of Metallic Materials by Integrating Crystal Plasticity and Phase Field Model

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