Co-Ni-Ga high-temperature shape memory alloy is additively processed by selective laser melting for the first time. Reversiblemartensitic transformation of the as-built material is proven by differential scanning calorimetry. Microstructural analysis reveals a columnar-grained microstructure due to epitaxial solidification. Columnar-grained microstructures are characterized by a very low degree of constraints being beneficial for superior functional performance in numerous shape memory alloys. However, process-induced crack formation remains a challenge towards robust realization of adequate mechanical properties.
@article{doi:10.17170/kobra-2024052910238,
author ={Lauhoff, Christian and Fischer, Andreas and Sobrero, César Ernesto and Liehr, Alexander and Krooß, Philipp and Brenne, Florian and Richter, Julia and Kahlert, Moritz and Böhm, Stefan and Niendorf, Thomas},
title ={Additive manufacturing of Co-Ni-Ga high-temperature shape memory alloy - Processability 3 and phase transformation behavior},
keywords ={600 and 660 and 670 and Memory-Legierung and Hochtemperatur and Cobaltlegierung and Nickellegierung and Galliumlegierung and Rapid Prototyping and Selektives Laserschmelzen and Mikrostruktur and Mechanische Eigenschaft},
copyright ={https://rightsstatements.org/page/InC/1.0/},
language ={en},
journal ={Metallurgical and Materials Transactions A},
year ={2019}
}