Authors:
Raúl Gómez (Lortek S.COOP, Spain),
Fermin Garciandia (Lortek S.COOP, Spain),
Maria San Sebastian (Lortek S.COOP, Spain),
Ane Miren Mancisidor (Lortek S.COOP, Spain)
Abstract:
Shape memory alloys (SMAs) are smart materials capable of recovering their original shape after being deformed by applying some stimuli. This effect occurs as a results of the martensitic transformation between the austenitic and martensitic phases. This unique characteristic make these materials appropriate to use in medical applications such as stents and for actuators. Fe based SMA are attractive alloys from cost perspective in contrast to the more common NiTi material. Additive manufacturing appears as a potential manufacturing process since it offers the possibility to fully exploit the attractive functionalities of SMAs.In this work, the processability of Fe based SMA by laser powder bed fusion has been studied. The microstructure has been analyzed by scanning electron microscopy and EBSD in as-built and after a heat treatment. Mechanical properties have also been determined. The resulting phase proportions responsible of the martensitic transformation is greatly dependent on the applied laser energy.
DOI:
https://doi.org/10.59499/WP225371863