A5022767351- Aluminum Alloy Microstructure Properties
- Solidification and crystal growth phenomena
- High Temperature Alloys and Creep
- Nuclear Materials and Properties
- Metallurgical Processes and Thermodynamics
- Metal-Organic Frameworks: Synthesis and Applications
- Microstructure and mechanical properties
- Fusion materials and technologies
- Graphite, nuclear technology, radiation studies
- Nuclear reactor physics and engineering
- Metallurgy and Material Forming
- Nuclear and radioactivity studies
- Advanced Materials Characterization Techniques
- Thermodynamic and Structural Properties of Metals and Alloys
- Radioactive element chemistry and processing
- High-Temperature Coating Behaviors
- Risk and Safety Analysis
- Aluminum Alloys Composites Properties
- Covalent Organic Framework Applications
- Advanced materials and composites
- Membrane Separation and Gas Transport
- Iron and Steelmaking Processes
- Advanced Battery Materials and Technologies
- Chemical Synthesis and Characterization
- Microstructure and Mechanical Properties of Steels
Kyung Hee University
2018-2024
Yong In University
2024
Korea Atomic Energy Research Institute
2013-2019
Pennsylvania State University
2004-2016
KU Leuven
2013-2016
Samsung (South Korea)
1996
Sandia National Laboratories
1985
University of Florida
1985
The “ship-in-a-bottle” entrapment of bioactive molecules in metal–organic framework (MOF)-based xerogel monoliths based on a controlled mesopore architecture was reported.
We developed a phase-field model to study the stress-driven grain boundary migration in elastically inhomogeneous polycrystalline materials with arbitrary elastic inhomogeneity and anisotropy. The dependence of stiffness tensor on orientation is taken into account, equilibrium equation solved using Fourier spectral iterative-perturbation method. studied planar curved boundaries under an applied stress. relation between velocity driving force found be linear steady-state regime. Our shows...
While nanocrystalline (NC) metals exhibit superior strength to conventional microcrystalline metals, their thermal instability has hampered application at high temperatures. Herein, two-dimensional (2D) boron nitride nanosheets (BNNS) are proposed as reinforcement enhance the well stability of NC Al. The pure Al was increased from 80 468 MPa by refining its grains ~600 ~40 nm, and it further enhanced 685 incorporating 2 vol% BNNS. Moreover, small amount BNNS found effectively suppress grain...
Second-phase particles are often employed to inhibit the grain growth of polycrystalline materials. We studied interaction between a second-phase particle and boundary using phase-field method. In particular, we determined magnitude pinning force exerted by on boundary. considered effect morphology examining several shapes including spherical, ellipsoidal cubic. The forces computed from were compared with available analytical theories for spherical shapes. derived an expression cubic...
In this paper, the dynamics of phase coarsening at ultrahigh volume fractions (0.9≤VV≤0.96) is first studied based on two-dimensional phase-field simulations by numerically solving time-dependent Ginzburg–Landau and Cahn–Hilliard equations. It shown that cubic average radius particles approximately proportional to time in good agreement with one experimental observations. The microstructural evolutions for different are shown. scaled particle size distribution as functions dispersoid...
Abstract We report an efficient phase field formalism to compute the stress distribution in polycrystalline materials with arbitrary elastic inhomogeneity and anisotropy The dependence of stiffness tensor on grain orientation is taken into account, equilibrium equation solved using a spectral iterative perturbation method. discuss its applications computing residual systems containing arbitrarily shaped cavities cracks (with zero modulus) determining effective properties polycrystals...
We performed phase-field simulations to analyse the interaction of a migrating grain boundary with an evolving second-phase particle. It is found that depending on difference between interfacial energies particle–matrix interface for two orientations involved and driving force movement, particles particle size well above critical limit can dissolve due passage boundary.
Magnesium (Mg) has good physical properties including light weight, excellent specific strength and high stiffness, Mg is used in many fields. But current production methods of have disadvantages, such as the generation sulfur oxide chlorine gas. In this situation, The Korea Institute Geoscience Mineral Resources (KIGAM) developed a Molten Salt Electrolysis Using Liquid Metal Cathode (MSELMC) method to produce high-purity magnesium. MSE-LMC can obtain 99.998-99.999% highpurity magnesium by...
Phase-field modeling of isotropic and anisotropic grain growth has been performed in 2D 3D system. The multi order parameter model is adopted OpenMP implemented to enhance the computational efficiency. When phenomenon occurs, misorientation distribution function low angle boundary increased at early stage it converge certain value, 0.18 0.24 3D. average numbers faces nearly same as values growth, which 6.0 13.8