| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Processing Effects on Microstructure and Material Performance
|
| Presentation Title |
Directed Energy Deposition of Al 5xxx Alloy Using Laser Engineered Net Shaping (LENS®) |
| Author(s) |
David Svetlizky, Baolong Zheng, Tali Buta, Yizhang Zhou, Oz Golan, Uri Breiman, Rami Haj-Ali, Julie M. Schoenung, Enrique J. Lavernia, Noam Eliaz |
| On-Site Speaker (Planned) |
David Svetlizky |
| Abstract Scope |
Successful additive manufacturing of aluminum-based alloys has focused on near-eutectic AlSi and AlSiMg alloys. Here, we present directed energy deposition of Al 5xxx alloy using Laser Engineered Net Shaping (LENS®). The effect of processing parameters such as powder flow rate and laser scan speed on the density of the material is shown. A relative density higher than 99% was achieved. The pore shape and size distribution are analyzed by X-ray micro-computed tomography (µ-CT). A mean hardness of 65 VHN was measured in as-deposited samples. This value is slightly lower than that of wrought Al 5083, which is attributed to the observed reduction in Mg concentration in the printed material compared to the gas atomized powder feedstock used. The results of tensile tests combined with digital image correlation (DIC) are also reported. This study paves the way for process optimization toward printing of Al 5083 alloy by LENS®. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |