Shape memory alloys exhibit unique properties that make them ideal for functionally integrated components, such as actuators. While commonly used Ni-Ti alloys are well-established, especially in biomedicine and aerospace, their high cost limits wider applications. Fe-based shape memory alloys present an affordable alternative, suitable for diverse applications, with a larger thermal hysteresis but lower recovery strain. Nonetheless, their functional properties can be enhanced through optimized processing methods like laser powder bed fusion and adjustments to their alloy composition. However, attributing the functional improvements to individual factors is complex due to interdependency and inseparability of some factors.


In order to address this ambiguous state of literature, laser powder bed fusion was used for modifying the composition and microstructure of a FeMnSiCr-alloy. For this purpose, in-situ modifications during the additive manufacturing process were carried out to alter the material. Subsequently, the impact of the resulting compositional changes on the functional properties was analyzed. Attendees will gain insights into the targeted use of the laser powder bed fusion process for in-situ customized iron-based shape memory alloys. In this regard, our research highlights the potential of laser-based additive manufacturing for modifying the alloy composition and microstructure of shape memory alloys and, thus, tailoring their functional properties.