About this Abstract |
Meeting |
12th International Conference on Magnesium Alloys and their Applications (Mg2021)
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Symposium
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12th International Conference on Magnesium Alloys and their Applications (Mg 2021)
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Presentation Title |
Physical, Chemical, and Mechanical Evaluations of Binder-jet Additive Manufactured Mg-Zn-Zr Alloy for Biomedical Applications |
Author(s) |
Mojtaba Salehi, Gerard Zi Quan Ong, Hang Li Seet, Sharon Mui Ling Nai |
On-Site Speaker (Planned) |
Mojtaba Salehi |
Abstract Scope |
Magnesium (Mg) is one of the most challenging materials for additive manufacturing (AM). Near room temperature binder jetting of Mg powder shows great promise as an AM solution to fabricate green parts. However, a material-property evaluation of sintered parts is still lacking. This work aimed to provide an insight into the properties of sintered binder-jet printed Mg parts. Binder jetting was used to fabricate green parts made of Mg-5.9Zn-0.17Zr powder followed by sintering in an argon atmosphere. Micro-computed tomography and mercury porosimetry results exhibit interconnected porous structures with density > 87% and median pore diameter of 12.7 µm. Chemical analysis indicates that the evaporation of alloying elements is trivial (i.e., < 6%) compared to those observed in the laser powder bed fusion of Mg alloys. Finally, mechanical testing demonstrates that the sintered Mg parts provide comparable tensile strength, elastic modulus, and compressive properties to those seen for human cortical bone. |
Proceedings Inclusion? |
Planned: At-meeting proceedings |