About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Presentation Title |
Effect of thermal post-processing on microstructure and tensile behavior of additively manufactured aluminum alloys (AlSi10Mg and Scalmalloy) via L-PBF: A comparative study |
Author(s) |
Md Faysal Khan, Shaharyar Baig, Seyed R. Ghiaasiaan, Paul R. Gradl, Shuai Shao, Nima Shamsaei |
On-Site Speaker (Planned) |
Md Faysal Khan |
Abstract Scope |
Additive manufactured aluminum (Al) alloys have recently received growing interest from different industrial sectors. This study aims to compare the microstructure and tensile properties of two laser powder bed fused (L-PBF) Al alloys, i.e., AlSi10Mg and Scalmalloy, in both heat-treated and non-heat-treated conditions. In this study, the microstructure is examined using scanning electron microscope (SEM), and quasi-static mechanical properties are generated using tensile tests. For AlSi10Mg, Si-networks are observed to break down, and Mg2Si precipitates form during hot isostatic pressing (HIP) followed by T6 heat treatment. For Scalmalloy, the density of nano-sized intergranular Al3(ScxZr1-x) precipitates increases after only HIP. Furthermore, it is observed that the addition of HIP process improves the tensile strength compared to their conventionally heat-treated AM (for AlSi10Mg T6 and for Scalmalloy stress relief) as well as wrought counterparts. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |