Development of process parameters for selective laser melting of a Zr-based bulk metallic glass

Document identifier: oai:DiVA.org:ltu-77856
Access full text here:10.1016/j.addma.2020.101124
Keyword: Engineering and Technology, Mechanical Engineering, Applied Mechanics, Teknik och teknologier, Maskinteknik, Teknisk mekanik, Selective laser melting, AMZ4, Bulk metallic glass, Experimental Mechanics, Experimentell mekanik, Hållfasthetslära, Solid Mechanics
Publication year: 2020
Relevant Sustainable Development Goals (SDGs):
SDG 9 Industry, innovation and infrastructure
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Abstract:

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.

Authors

Jithin James Marattukalam

Department of Physics, Materials Physics, Uppsala University
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Victor Pacheco

Department of Chemistry- Ångström Laboratory, Uppsala University
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Dennis Karlsson

Department of Chemistry- Ångström Laboratory, Uppsala University
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Lars Riekehr

Department of Chemistry- Ångström Laboratory, Uppsala University
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Johan Lindwall

Luleå tekniska universitet; Material- och solidmekanik
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Fredrik Forsberg

Luleå tekniska universitet; Strömningslära och experimentell mekanik
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Ulf Jansson

Department of Chemistry- Ångström Laboratory, Uppsala University
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Martin Sahlberg

Department of Chemistry- Ångström Laboratory, Uppsala University
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Björgvin Hjörvarsson

Department of Physics, Materials Physics, Uppsala University
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