Journal
ADDITIVE MANUFACTURING
Volume 33, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.addma.2020.101124
Keywords
Selective laser melting; AMZ4; Bulk metallic glass
Funding
- Swedish Foundation for Strategic Research (SSF) within the Swedish national graduate school in neutron scattering (SwedNess)
- Swedish Foundation for Strategic Research (SSF), through the project Development of Process and Materials in Additive Manufacturing [GMT14-0048]
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Parameters for selective laser melting of Zr59.3Cu28.8Al10.4Nb1.5 (trade name AMZ4), allowing crack-free bulk metallic glass with low porosity, have been developed. The phase formation was found to be strongly influenced by the heating power of the laser. X-ray amorphous samples were obtained with laser power at and below 75 W. The as-processed bulk metallic glass was found to devitrify by a two-stage crystallization process within which the presence of oxygen was concluded to play an essential role. At laser powers above 75 W, the observed crystallites were found to be a cubic phase (Cu2Zr4O). The hardness and Young's modulus in the as-processed samples was found to increase marginally with increased fraction of the crystalline phase.
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