scholarly journals Basic and mixed models for computer simulation of liquid phase sintering of a porous structure

2007 ◽  
Vol 39 (1) ◽  
pp. 3-8 ◽  
Author(s):  
Z.S. Nikolic
Keyword(s):  
Computer Simulation ◽  
Liquid Phase ◽  
Porous Structure ◽  
Microstructural Evolution ◽  
Mixed Models ◽  
Liquid Phase Sintering ◽  
Two Dimensional ◽  
Gravitational Effects ◽  
Diffusion Phenomena

A two-dimensional method based on basic and mixed models for simulation of liquid phase sintering of a porous structure will be developed. These models will be tested in order to conduct a study of diffusion phenomena and gravitational effects on microstructural evolution during liquid phase sintering of a W-Ni system.

scholarly journals Liquid phase sintering, II: Computer study of skeletal settling and solid phase extrication in a microgravity environment

2008 ◽  
Vol 40 (2) ◽  
pp. 107-116 ◽  
Author(s):  
Z.S. Nikolic
Keyword(s):  
Liquid Phase ◽  
Solid Phase ◽  
Control Volume ◽  
Liquid Phase Sintering ◽  
Microgravity Environment ◽  
Two Dimensional ◽  
Diffusion Phenomena ◽  
Brownian Motion Model ◽  
And Control ◽  
Skeleton Formation

A two-dimensional numerical method based on the Brownian motion model and on the Densification model for simulation of liquid phase sintering in microgravity environment will be developed. Both models will be based on domain topology (two-dimensional particle representation) and control volume methodology and on three submodels for domain translation, solid skeleton formation and domain extrication. This method will be tested in order to conduct a study of diffusion phenomena and microgravitational effects on microstructural evolution influenced by skeletal settling combined with solid-phase extrication during liquid phase sintering of porous W-Ni system.

scholarly journals Basic, extended and combined models for computer simulation of liquid phase sintering

2002 ◽  
Vol 34 (1) ◽  
pp. 41-51 ◽  
Author(s):  
Zoran Nikolic
Keyword(s):  
Computer Simulation ◽  
Liquid Phase ◽  
Grain Boundary ◽  
Boundary Migration ◽  
Simulation Method ◽  
Liquid Phase Sintering ◽  
Grain Boundary Migration ◽  
Two Dimensional ◽  
Dimensional Modeling ◽  
Combined Models

In this study, two-dimensional modeling of microstructural evolution during liquid phase sintering was considered. The simulation method developed is based on basic, extended and combined models defined for diffusion induced grain boundary migration.

Computer simulation code for particle growth in liquid phase sintering

1988 ◽  
Vol 22 (1) ◽  
pp. 71-76 ◽  
Author(s):  
J.M. Chaix ◽  
M. Guyon ◽  
J. Rodriguez ◽  
C.H. Allibert
Keyword(s):  
Computer Simulation ◽  
Liquid Phase ◽  
Particle Growth ◽  
Liquid Phase Sintering ◽  
Simulation Code

scholarly journals Computer simulation of free settling and skeletal settling during liquid phase sintering

2006 ◽  
Vol 38 (1) ◽  
pp. 41-54 ◽  
Author(s):  
Z.S. Nikolic
Keyword(s):  
Computer Simulation ◽  
Liquid Phase ◽  
Solid Phase ◽  
Boundary Migration ◽  
Domain Boundary ◽  
Numerical Procedure ◽  
Simulation Models ◽  
Liquid Phase Sintering ◽  
Solid Skeleton ◽  
Two Stages

In recent years, a range of computer simulation models leading to a better understanding of liquid phase sintering phenomena, have been developed with the aim of simulating the detailed evolution of microstructure during grain growth. Some liquid phase sintered materials show both macrostructural and microstructural effects associated with gravity force. Therefore we will develop a numerical procedure for the estimation of how much gravity will influence domain (two-dimensional particle representation) growth, domain boundary migration and solid skeleton formation due to gravity induced segregation during liquid phase sintering. The method used for the simulation of a gravity field will be based on the settling procedure. Gravity induced settling will be separated into two stages - Free Settling and Skeletal Settling. Isolated solid phase domains fall under gravity and slide down over the already settled domains (free settling). During settling they make point contacts with each other. Necks between them then form and start to grow until the equilibrium dihedral angle between the domain boundaries and the liquid is established. Thus a solid skeleton forms and skeletal settling of a connected solid structure takes place. .

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