Simulation of Grain Growth in Aluminum Alloys under Selective Laser Melting

A computer model for simulating the processes of crystallization of multicomponent aluminum-base alloys under laser treatment is developed. Crystallization of an alloy is simulated at various parameters, i.e., sizes of the construction zone, number of acts of nucleation and growth of grains, and max...

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Bibliographic Details
Published in:Metal science and heat treatment 2022-11, Vol.64 (7-8), p.474-477
Main Authors: Loginova, I. S., Popov, N. A., Solonin, A. N.
Format: Article
Language:English
Subjects:
Additive Technologies
Aluminum
Aluminum alloys
Aluminum base alloys
Analysis
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Columnar structure
Crystallization
Engineering Thermodynamics
Epitaxy
Form factors
Grain growth
Grain size
Growth
Heat and Mass Transfer
Laser beam melting
Materials Science
Mathematical models
Metallic Materials
Nucleation
Optimization
Parameters
Powder and Composite Materials
Recrystallization
Simulation
Specialty metals industry
Substrates
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Summary:A computer model for simulating the processes of crystallization of multicomponent aluminum-base alloys under laser treatment is developed. Crystallization of an alloy is simulated at various parameters, i.e., sizes of the construction zone, number of acts of nucleation and growth of grains, and maximum total number of acts in the system. The model exhibits good reproducibility of results and makes it possible to determine such structural parameters as the mean grain size, the form factor, and the proportion of recrystallized volume in the crystallization process. The model may be used for designing recrystallization under the conditions of presence of an epitaxial layer (substrate), which permits estimation of the effect of crystallization parameters on formation of a zone of columnar crystals in the structure and optimization of these parameters.
ISSN:0026-0673
1573-8973
DOI:10.1007/s11041-022-00833-7