CC BY
16LM-I-15
LASER-MATTER INTERACTION
An insight into property-process parameters correlation of laser additive manufactured TiC precipitates in Ti-Al composite
M.D. Khomenko1, F.Kh. Mirzade1, J. D. Majumdar2
1- Institute on laser and information technologies RAS - branch of FSRC "Crystallography and photonics"
RAS, 1, Svyatoozerskaya str., Shatura, Russia, 140700
2- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, India
hmd@laser.ru
The correlation of properties and process parameters in laser additive manufacturing requires an understanding of the related phenomena in order to make the right choice in optimization. The complex nature of these technologies is reflected in the multitude of processing parameters involved, high temperatures and flow rates, making direct examination inefficient or even impossible. Direct numerical simulation has proven to be a reliable method for confirming experimental results and obtaining valuable information about phenomena. For example, our macro model shows very good performance and has already been calibrated and validated for homogeneous materials [1]. We present a numerical model that predicts solute transport and precipitation phenomena for Ti-Al composite samples reinforced with TiC particles and fabricated by laser metal deposition (LMD). We use published experimental data to calibrate the precipitation model [2]. It is shown that the dynamics and distribution of the temperature field affect the size of deposited TiC particles in Ti-Al/TiC composite samples. We are trying to isolate the most valuable processing parameters for optimization.
[1] M.D. Khomenko, N.W. Makoana, F.K. Mirzade, S. Pityana, Coupled heat transfer, fluid flow and solidification kinetics for laser additive manufacturing applications. Journal of Manufacturing Processes, 67, 611-618. (2021).
[2] A. Weisheit, A. Dutta, S. K. Rittinghaus, and J. D. Majumdar, Structure-property-process parameters correlation of laser additive manufactured TiC dispersed titanium aluminide (Ti45Al5Nb0. 5Si) composite. Intermetallics, 134, 10718 (2021).
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ALT'22
