About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
|
Presentation Title |
Microstructure Evolution and Mechanical Properties of 3D Printed and Sintered Copper Parts |
Author(s) |
Kameswara Pavan Kuma Ajjarapu, Luke Malone, Carrie Barber, Mark Barr, Matteo Zanon, Sundar V. Atre, Kunal H. Kate |
On-Site Speaker (Planned) |
Kameswara Pavan Kuma Ajjarapu |
Abstract Scope |
In this work, a combination of Fused Filament Fabrication (FFF) and sintering were implement to fabricate high density copper parts via extrusion-based 3D printing technology. 58vol.% copper powder-filled polymeric feedstocks and filaments were prepared and characterized for physical, thermal, and rheological properties. Subsequently, the filaments were 3D printed into tensile and tablet geometries. An L9 Taguchi design of experiments was performed by varying print temperature, print speed, and layer height for three levels to identify optimal process conditions that can maximize green density and minimize surface roughness perpendicular and parallel to the build direction. Green parts were further sintered and characterized to understand the physical and mechanical properties of the final parts. Additionally, microstructure evolution with varying sintering conditions was studied to identify it’s influence on final part properties. This study provides a wholistic understanding of the structure-property-processing corelationship in 3D printed copper parts. |