Abstract
This study describes a self-consistent theoretical model of simulating diffusion-controlled kinetics on the liquid–solid phase boundary during high-speed solidification in the melt pool after the selective laser melting (SLM) process for titanium matrix composite based on Ti–TiC system. The model includes the heat transfer equation to estimate the temperature distribution in the melt pool and during crystallization process for some deposited layers. The temperature field is used in a micro region next to solid–liquid boundary, where solute micro segregation and dendrite growth are calculated by special approach based on transient liquid phase bonding. The effect of the SLM process parameters (laser power, scanning velocity, layer thickness and substrate size) on the microstructure solidification is being discussed.
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The study was supported by the grant of the Russian Foundation of Basis Researches (RFBR No. 14-29-10193 ofi-m).
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This article is part of the Topical Collection on Fundamentals of Laser Assisted Micro- and Nano-technologies.
Guest edited by Eugene Avrutin, Vadim Veiko, Tigran Vartanyan and Andrey Belikov.
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Shishkovsky, I. Heat transfer and diffusion-controlled kinetics of liquid–solid phase in titanium matrix composite during selective laser melting. Opt Quant Electron 49, 80 (2017). https://doi.org/10.1007/s11082-017-0916-8
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DOI: https://doi.org/10.1007/s11082-017-0916-8