About this Abstract |
Meeting |
MS&T23: Materials Science & Technology
|
Symposium
|
Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
|
Presentation Title |
Multi-scale Processing-structure-property Relationships for Directed Energy Deposition |
Author(s) |
William Kunkel, Dan Thoma |
On-Site Speaker (Planned) |
William Kunkel |
Abstract Scope |
Additive manufacturing techniques provide opportunities for the fabrication of advanced materials and complex geometries with reduced processing steps as compared to conventional manufacturing techniques. In this study we present multi-scale PSP relationships for 316L stainless steel components manufactured using directed energy deposition (DED); this enables predictive processing. Bulk parts were processed using a range of process parameters and a combination of high throughput processing and low throughput characterization methods were applied. The experimental data was used to develop multi-scale PSP relationships. These relationships are represented by build height, dendrite arm spacing (DAS) and hardness. Single melt tracks were then made to investigate puddle geometries affecting build heights. Both in-situ optical measurements and post synthesis measurements were collected to couple processing with structure-property relationships. Results show that hardness, DAS, and build height can be explained with in a multi-scale PSP framework. |