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Title: Combined macro-meso scale modeling of sintering. Part II, Mesoscale simulations

Abstract

A mesoscale kinetic Monte Carlo model is presented to simulate microstructural evolution during sintering of 2D complex microstructures which evolves by grain growth, pore migration and densification. No assumptions about the geometry of the evolving microstructure are made. The results of these simulations are used to generate sintering stress and normalize viscous bulk modulus for use in continuum level simulation of sintering. The advantage of these simulations is that they can be used to generate more accurate parameters as various assumptions regarding geometry and transport mechanism are made. The previous companion paper used the results from the mesoscale simulations to simulate shrinkage and warpage in sintering of bilayer ceramics.

Authors:
; ;
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (US); Sandia National Labs., Livermore, CA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
755625
Report Number(s):
SAND2000-0117C
TRN: AH200021%%60
DOE Contract Number:
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: Recent Developments in Computer Modelling of Powder Metallurgy Processes, Kiev (UA), 05/15/2000--05/18/2000; Other Information: PBD: 23 May 2000
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; SINTERING; MONTE CARLO METHOD; MICROSTRUCTURE; MORPHOLOGICAL CHANGES; CERAMICS; MATHEMATICAL MODELS

Citation Formats

TIKARE,VEENA, OLEVSKY,EUGENE A., and BRAGINSKY,MICHAEL V. Combined macro-meso scale modeling of sintering. Part II, Mesoscale simulations. United States: N. p., 2000. Web.
TIKARE,VEENA, OLEVSKY,EUGENE A., & BRAGINSKY,MICHAEL V. Combined macro-meso scale modeling of sintering. Part II, Mesoscale simulations. United States.
TIKARE,VEENA, OLEVSKY,EUGENE A., and BRAGINSKY,MICHAEL V. Tue . "Combined macro-meso scale modeling of sintering. Part II, Mesoscale simulations". United States. doi:. https://www.osti.gov/servlets/purl/755625.
@article{osti_755625,
title = {Combined macro-meso scale modeling of sintering. Part II, Mesoscale simulations},
author = {TIKARE,VEENA and OLEVSKY,EUGENE A. and BRAGINSKY,MICHAEL V.},
abstractNote = {A mesoscale kinetic Monte Carlo model is presented to simulate microstructural evolution during sintering of 2D complex microstructures which evolves by grain growth, pore migration and densification. No assumptions about the geometry of the evolving microstructure are made. The results of these simulations are used to generate sintering stress and normalize viscous bulk modulus for use in continuum level simulation of sintering. The advantage of these simulations is that they can be used to generate more accurate parameters as various assumptions regarding geometry and transport mechanism are made. The previous companion paper used the results from the mesoscale simulations to simulate shrinkage and warpage in sintering of bilayer ceramics.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 23 00:00:00 EDT 2000},
month = {Tue May 23 00:00:00 EDT 2000}
}

Conference:
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  • An integrated approach, including a continuum theory of sintering and mesostructure evolution analysis, is used for the solution of the problem of bi-layered structure sintering. Two types of bi-layered structures are considered: layers of the same material different by initial porosity, and layers of two different materials. The effective sintering stress and the normalized bulk modulus for the bi-layer powder sintering are derived based on mesoscale simulations. The combined effect of the layers' porosity and differences in sintering rate on shrinkage and warpage is studied for both sintering on a rigid substrate and free sintering.
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  • Abstract not provided.