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Meeting Materials Science & Technology 2019
Symposium Additive Manufacturing Education
Presentation Title Meta-crystals: Damage-tolerant Architected Lattice Materials and Its Educational Use in Visualising Crystal Microstructure
Author(s) Chen Liu, Jedsada Lertthanasarn, Minh-Son Pham
On-Site Speaker (Planned) Chen Liu
Abstract Scope Architected lattice materials are lightweight materials that can exhibit combinations of properties which are inaccessible to conventional solids. However, they have a major issue in that these materials can exhibit a catastrophic post-yielding collapse, causing substantial loss in strength and reduction in energy absorption during deformation. In this study, we present a novel approach in using additive manufacturing to mimic the microstructure observed in crystalline metals to employ key metallurgical hardening mechanisms such as boundary, precipitation and phase hardening to design crystal-like architected materials that are lightweight and extraordinarily damage-tolerant. In particular, we demonstrate substantial hardening can be readily achieved via tailoring polygrain-like, precipitate-like or multiphase-like mesostructures. Last but not least, we will show that crystal-inspired architected materials offer an excellent means in visualising the microstructure in crystals, this significantly assists the teaching and understanding of crystallography and metallurgical hardening in under/postgraduate programmes in materials.
Proceedings Inclusion? Definite: At-meeting proceedings

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Additive Manufacturing Education at Georgia Tech
Additive Manufacturing in Capstone Design Projects at Materials Innovation Guild @ University of Louisville
Additive Manufacturing in Making Powder Metallurgy Filters – Student Experiences in Manufacturing Laboratory
Data Analytics for Metal Additive Manufacturing
Engineering Better Additive Manufacturing Education: Leveraging Research-based Approaches to Prepare the Future Workforce
Free-form Additive Manufacturing Lab
Hands-on Additive Manufacturing Education for Undergraduate Materials Engineers
Meta-crystals: Damage-tolerant Architected Lattice Materials and Its Educational Use in Visualising Crystal Microstructure

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