Authors:
Valerie Goettgens (University of Innsbruck, Austria),
Gerhard Leichtfried (University of Innsbruck, Austria),
Stefan Mitsche (FELMI-ZFE, Austria)
Abstract:
Bulk metallic glass composites (BMGCs) overcome the unfavorable lack of plastic deformation of completely amorphous alloys by adding ductile metallic shares. This is the first study that attempts to produce a partially amorphous alloy in an inexpensive and straightforward system of Ti-6Al-4V – 15 wt.% Cu using laser powder bed fusion (LPBF) with in-situ alloying. Local chemical inhomogeneities are desired, as they allow simultaneous solidification of different microstructures. In the produced alloy, fabricated with a single melting and a pulsed remelting strategy, partly X-ray amorphous material was found. The remelting strategy led to the increase of the X-ray amorphous phase and caused the number of grains < 1 µm to increase from 7.8 % (single melting) to 14 %. This study shows the feasibility of producing a partly X-ray amorphous alloy in which the amount of X-ray amorphous shares can be controlled with process parameters.
DOI:
https://doi.org/10.59499/WP225367219