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Communication dans un congrès

Study of the microstructure and mechanical properties obtained by Laser Boost in SLM process for the Ti-64 alloy

Abstract : Selective laser melting (SLM) is one of the new additive manufacturing techniques in which complex parts can be created directly by selectively melting layers of powder. If the productivity of the process is too fast, defects (porosity, partially melted powder, spatters …) are generated inside the fabricated parts and can deteriorate the mechanical properties of the product. A new Laser Boost strategy with a larger melting area and a productivity of 43.20 cm 3 /h has been compared to a Linear Classic strategy. Ti-64 alloy samples were elaborated with both strategies to study their influence on microstructure and mechanical properties. Laser Boost strategy leads to the formation of Ti-64 prior β grains that are larger than the Linear Classic strategy. Mechanical properties obtains are similar with both strategies with a maximum strength average around 1250MPa and an elongation at failure between 3 and 9%. A thermal post-processing by Hot Isostatic Pressure have been carried out on samples made by Laser Boost to increase the ductility of the material up to 15%.
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Communication dans un congrès
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https://hal.archives-ouvertes.fr/hal-03035530
Contributeur : Thierry Baudin <>
Soumis le : mercredi 2 décembre 2020 - 11:26:03
Dernière modification le : dimanche 6 décembre 2020 - 03:26:12

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Widomski 2020.pdf
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  • HAL Id : hal-03035530, version 1

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Caroline Widomski, Denis Solas, Francois Brisset, Anne-Laure Helbert, Thierry Baudin, et al.. Study of the microstructure and mechanical properties obtained by Laser Boost in SLM process for the Ti-64 alloy. Thermec 2021, May 2021, Vienne, Austria. ⟨hal-03035530⟩

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