|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location-Specific Processing-Microstructure-Property Relationships
||Recent Progress in Low-cost Open-source Metal 3-D Printing
||Joshua M. Pearce, Paul Sanders
|On-Site Speaker (Planned)
The open-source release of the self-replicating rapid prototyper (RepRap) 3-D printer design enabled an explosion of innovation and access to additive manufacturing technology. This work was primarily limited to polymers, however, by augmenting RepRap 3-D printer designs a low-cost metal 3-D printer utilizing gas metal arc welding (GMAW) technology was developed. These designs have matured with integrated open source electronic monitoring and control systems, as well as porting the concept to augmented CNC router tables. This enables small businesses and even individuals to print 3-D objects in metal. Initial work to characterize the porosity, hardness, and ultrasonic moduli of steel and aluminum parts produced found mechanical properties similar to the bulk wrought material. Additional mechanical properties tests have been undertaken to optimize processes for conventional alloys in GMAW-based 3-D printing and to identify 3-D printing-specific alloys and approaches for improved resolution. Recent progress in this burgeoning field will be reviewed.
||Planned: Supplemental Proceedings volume