Numerical simulation of solid state sintering |
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Affiliation: | 1. Sandia National Laboratories, Department of Materials and Process Modeling, Albuquerque, NM 87185-1411, USA;2. San Diego State University, San Diego, CA, USA;1. Department of Mechanical Engineering, Eindhoven University of Technology, 5612 AZ, Eindhoven, The Netherlands;2. Philips Research Laboratories, High Tech Campus 34, 5656 AE Eindhoven, The Netherlands;1. Université de Toulouse, Institut Carnot CIRIMAT, UMR 5085 CNRS – Université Toulouse III Paul-Sabatier – INPT, 118 route de Narbonne, 31062 Toulouse Cedex 9, France;2. CEMES, CNRS UPR 8011 and Université de Toulouse, 29 rue Jeanne Marvig, 31055 Toulouse, France;3. CNRS, Institut Carnot CIRIMAT, 118 route de Narbonne, 31602 Toulouse Cedex 9, France;1. Department of Nuclear Engineering, Penn State University, University Park, PA 16802, United States;2. Department of Material Science and Engineering, University of Florida, Gainesville, FL 32611, United States;3. Fuel Modeling and Simulation, Idaho National Laboratory, Idaho Falls, ID 83415, United States;1. Department of Energy Conversion and Storage, Technical University of Denmark – DTU, Frederiksborgvej 399, DK-4000 Roskilde, Denmark;2. Sandia National Laboratory, Albuquerque, New Mexico, NM 87185, USA;3. Mechanical Engineering Department, San Diego State University, 5500 Campanile Dr., San Diego, CA 92182-1323, USA;1. Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China;2. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi''an 710072, China;3. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;1. Fraunhofer Institute for Mechanics of Materials IWM, 79108 Freiburg, Germany;2. Institute of Materials Science, Technische Universität Darmstadt, 64287 Darmstadt, Germany;3. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research IEK-1: Materials Synthesis and Processing, 52425 Jülich, Germany |
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Abstract: | This paper discusses in detail the development of a numerical model capable of simulating microstructural evolution and macroscopic deformation during sintering of complex powder compacts. The model based on the kinetic Monte Carlo (Potts) approach simulates grain growth, vacancy diffusion, and pore annihilation at grain boundaries, which is responsible for densification. Results of 2D simulations for perfect close-packed and random starting configurations are presented and discussed. The microstructural evolution is used to obtain the sintering stress––the macroscopic stress that is equivalent to the microstructural driving force for deformation. |
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