| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Processing Effects on Microstructure and Material Performance
|
| Presentation Title |
A-121: Mechanical Properties of AlSi10Mg Processed by Laser Powder Bed Fusion at Elevated Temperature |
| Author(s) |
Even W. Hovig, Amin S. Azar, Mohammed Mhamdi, Knut Sørby |
| On-Site Speaker (Planned) |
Even W. Hovig |
| Abstract Scope |
AlSi10Mg processed by laser powder bed fusion is expected to have remarkable mechanical properties due to its cellular microstructure. However, the as-processed material is often both anisotropic and contains significant residual stresses. To mitigate these problems, a retrofitted heating system was used to elevate the process temperature to 200°C. The results show low levels of porosity, anisotropy and residual stress. Furthermore, the effect of three heat treatment conditions (as-built, stress relief, and T6) on the tensile properties were investigated. For this purpose, 14 tensile samples were built in seven different orientations. Digital image correlation was used to understand the deformation mechanism for each heat treatment condition. The results show that the as-built material have comparable properties to the stress relieved condition, while T6 heat treatment resulted in slightly increased ductility. Based on the results, processing AlSi10Mg at elevated temperature can eliminate the need for post-build stress relief heat treatment. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |