Version 1
: Received: 6 August 2024 / Approved: 7 August 2024 / Online: 7 August 2024 (17:51:25 CEST)
How to cite:
Bernard, G.; Pejchal, V.; Sereda, O.; Logé, R. E. Highly Reinforced Ti-TiC Metal-Matrix Composites Manufactured by Laser Powder Bed Fusion. Preprints2024, 2024080490. https://doi.org/10.20944/preprints202408.0490.v1
Bernard, G.; Pejchal, V.; Sereda, O.; Logé, R. E. Highly Reinforced Ti-TiC Metal-Matrix Composites Manufactured by Laser Powder Bed Fusion. Preprints 2024, 2024080490. https://doi.org/10.20944/preprints202408.0490.v1
Bernard, G.; Pejchal, V.; Sereda, O.; Logé, R. E. Highly Reinforced Ti-TiC Metal-Matrix Composites Manufactured by Laser Powder Bed Fusion. Preprints2024, 2024080490. https://doi.org/10.20944/preprints202408.0490.v1
APA Style
Bernard, G., Pejchal, V., Sereda, O., & Logé, R. E. (2024). Highly Reinforced Ti-TiC Metal-Matrix Composites Manufactured by Laser Powder Bed Fusion. Preprints. https://doi.org/10.20944/preprints202408.0490.v1
Chicago/Turabian Style
Bernard, G., Olha Sereda and Roland E. Logé. 2024 "Highly Reinforced Ti-TiC Metal-Matrix Composites Manufactured by Laser Powder Bed Fusion" Preprints. https://doi.org/10.20944/preprints202408.0490.v1
Abstract
Titanium-based metal-matrix composites manufactured by additive manufacturing offer tremendous lightweighting opportunities. However, processing high reinforcement content remains challenging. This study reports an improved manufacturing process for Ti-TiC enabling high reinforcement content and significant fracture strain concurrently: mechanical blending, followed by laser powder bed fusion and a single heat treatment. As-built microstructure shows both un-melted TiC particles and sub-stoichiometric TiC dendrites resulting from a partial dissolution of TiC particles. The heat treatment is shown to fully convert TiC dendrites into equiaxed TiC grains. Reduction of the C/Ti ratio in TiC during the process results in an increase in the reinforcement content, from a nominal 12 vol% to an effective 21.5 vol%. Ti-TiC tensile samples reached fracture strains of up to 1.7%, Young’s moduli of up to 149 GPa and ultimate tensile strengths of up to 827 MPa. Lower TiC initial powder size distributions displayed the best mechanical performance.
Chemistry and Materials Science, Ceramics and Composites
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
