About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
Presentation Title |
A-17: Hot Cracking during Powder Direct Energy Deposition: Experimental and Numerical Study |
Author(s) |
Pilar Rey Rodriguez, Monica Salgueiro Gonzalez, Mustafa Megahed |
On-Site Speaker (Planned) |
Mustafa Megahed |
Abstract Scope |
316L is considered to be a weldable material easily processed using direct energy deposition (DED). The standard composition does however allow for certain levels of impurities that could affect processability. In this study the influence of impurities on hot cracking susceptibility showed that higher levels of impurities lead to increased cracking. Different process parameters and deposition strategies are investigated experimentally and numerically to ensure crack free as-built material. A crack susceptibility model utilizes CALPHAD property predictions in combination with a process model to study the influence of processing parameters on crack distribution. Whereas improvements could be achieved, the influence of alloy composition could not be completely mitigated by adapting processing parameters. Crack free printing is achieved by reducing impurities. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, ICME, Other |