scholarly journals GRAIN BOUNDARY MIGRATION IN THIN FILMS USING MONTE CARLO METHOD

Anales AFA ◽  
2020 ◽  
Vol 31 (1) ◽  
pp. 7-12
Author(s):  
C. L. Di Prinzio ◽  
P. I. Achával ◽  
D. Stoler ◽  
G. Aguirre Varela
Keyword(s):  
Thin Films ◽  
Monte Carlo ◽  
Free Surface ◽  
Monte Carlo Method ◽  
Grain Boundary ◽  
Boundary Migration ◽  
Grain Boundary Migration ◽  
Thin Sample ◽  
The Monte Carlo Method ◽  
Theoretical Results

This paper presents the evolution of a flat grain boundary in a thin sample, using a numerical algorithm based on the Monte Carlo method. The grain boundary is driven by an external force and the effect of the free surface is studied.The grain boundary migration on the free surface is spasmodic, which means that it has alternating periods of movement and stagnation. Stagnation periods are inversely proportional to the thickness of the sample. The results obtained computationally fitted acceptable with the theoretical results obtained by different authors.

STUDY OF THE GRAIN BOUNDARY MIGRATION IN A TRICRISTAL PURE ICE WITH BUBBLES

Anales AFA ◽  
2019 ◽  
Vol 30 (3) ◽  
pp. 47-51
Author(s):  
P.I. Achával ◽  
C. L. Di Prinzio
Keyword(s):  
Monte Carlo ◽  
Grain Boundary ◽  
Numerical Simulations ◽  
Triple Junction ◽  
Boundary Migration ◽  
Optical Microscope ◽  
Physical Parameters ◽  
Grain Boundary Migration

In this paper the migration of a grain triple junction in apure ice sample with bubbles at -5°C was studied for almost 3hs. This allowed tracking the progress of the Grain Boundary (BG) and its interaction with the bubbles. The evolution of the grain triple junction was recorded from successive photographs obtained witha LEICA® optical microscope. Simultaneously, numerical simulations were carried out using Monte Carlo to obtain some physical parameters characteristic of the BG migration on ice.

scholarly journals KINETIC EVOLUTION OF A 3D SPHERICAL CRYSTAL WITH MOBILE PARTICLES USING MONTE CARLO

Anales AFA ◽  
2019 ◽  
Vol Vol.30 (Vol.30 N.2) ◽  
pp. 25-30
Author(s):  
P. I. Achával ◽  
C. A. Rodríguez Luca ◽  
C. L. Di Prinzio
Keyword(s):  
Monte Carlo ◽  
Grain Boundary ◽  
Boundary Migration ◽  
The Other ◽  
Monte Carlo Algorithm ◽  
Grain Boundary Migration ◽  
Initial Radius ◽  
The Mean ◽  
Spherical Crystal ◽  
The Law

In this work, the evolution of a tridimensional (3D) spherical crystal with mobile particles using a Monte Carlo algorithm is presented. The mean radius R of spherical crystal without particles changes according to the law: R2 = -4kt + Ro2, where Ro is the initial radius and k is a crystal constant. However, this law is modified when mobile particles are included. The effect of two types of mobile particles on the grain boundary migration of a spherical grain was also studied. One type of particle remained located in the middle of the grain boundary once it was incorporated (CT), and the other type of particle remained at the grain boundary without having any particular location (NC). It could be seen that the CT particle slowed down more the grain boundary migration than the NC particles. It was also found that the rate of reduction of the grain area is inversely proportional to the concentration of CT particles in the grain boundary for all the CT particles concentrations. Finally, it was established that the grain reaches a limit radius for CT particles which is related to the amount of particles that can be accommodated in the grain boundary.

Influence of Lattice Anisotropy on Models Formulated by Cellular Automata in Presence of Grain Boundary Movement: A Case Study

2005 ◽  
Vol 482 ◽  
pp. 195-198 ◽  
Author(s):  
Jiří Kroc
Keyword(s):  
Grain Boundary ◽  
Computational Algorithm ◽  
Boundary Migration ◽  
Grain Boundary Migration ◽  
Simple Modification ◽  
Boundary Movement ◽  
The Monte Carlo Method ◽  
Lattice Anisotropy ◽  
Grain Boundary Movement

This paper continues in the previous research focussed to two simple questions. The first one reads: ”What is the influence of anisotropy of computational lattice on simulations of boundary movement?” where grain boundary movement typically appears in simulations of grain boundary migration and static/dynamic recrystallization. The second question reads: ”How is the computational anisotropy related to natural anisotropy of the material lattice itself?” This study is focussed on the influence of change of the computational algorithm and/or lattice on the grain boundary movement. Two algorithms, the majority rule and the simple modification of the Monte Carlo method for two different lattices – namely square and hexagonal one – are used.

Study of the effect of grain boundary migration on hillock formation in Al thin films

2001 ◽  
Vol 90 (2) ◽  
pp. 781-788 ◽  
Author(s):  
Deok-kee Kim ◽  
William D. Nix ◽  
Richard P. Vinci ◽  
Michael D. Deal ◽  
James D. Plummer
Keyword(s):  
Thin Films ◽  
Grain Boundary ◽  
Boundary Migration ◽  
Grain Boundary Migration ◽  
Hillock Formation
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