About this Abstract |
Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Symposium
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2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Presentation Title |
Effect of Heat Treatment on the Micro-/Defect-Structure and Tensile Behavior of Additively Manufactured A1000-RAM10 Aluminum Alloy |
Author(s) |
Md Faysal Khan, Reza Ghiaasiaan, Paul R. Gradl, Shuai Shao, Nima Shamsaei |
On-Site Speaker (Planned) |
Md Faysal Khan |
Abstract Scope |
This study investigated the effect of heat treatment (HT) on micro-/defect-structure and room temperature tensile behavior of A1000-RAM10 aluminum alloy fabricated using laser powder bed fusion (L-PBF). The alloy was produced via a reactive additive manufacturing strategy, incorporating 10 vol.% Ti and B4C inoculant particles into pre-alloyed A1000 powder. These particles acted as grain boundary pinners, promoting the formation of equiaxed grains. The influence of different post-processing HTs, including stress relieving (SR) and hot isostatic pressing (HIP), was examined. HIP significantly reduced defect content compared to non-heat-treated and SR conditions. However, due to the presence of thermally stable secondary phase particles (i.e., TiC and B4C), the grain structure remained largely unchanged across all conditions. As a result, the yield and ultimate tensile strengths, and elongation to failure were comparable among the different HT conditions. These particles contributed to void nucleation, influencing both the failure mechanism and ductility of the alloy. |
Proceedings Inclusion? |
Planned: Post-meeting proceedings |