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| Kočí, Jan | Prague |
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Mair, Philipp
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Publications (4/4 displayed)
- 2024Advancements in metal additive manufacturingcitations
- 2022Feasibility Study Of Fabricating A Partly Amorphous Copper-Rich Titanium Alloy Via In-Situ Alloying In Laser Powder Bed Fusion
- 2022Unique microstructure evolution of a novel Ti-modified Al-Cu alloy processed using laser powder bed fusioncitations
- 2021Laser powder bed fusion of nano-CaB6 decorated 2024 aluminum alloycitations
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article
Advancements in metal additive manufacturing
Abstract
<p>The high design freedom of laser powder bed fusion (LPBF) additive manufacturing enables new integrated structures, which in turn demand advances in the process conditions and material design to exploit the full potential of this process. A computational multi-scale thermal simulation and metallurgical analysis of the aluminium alloy Scalmalloy® were used to develop and present a specific process window to enable an in-situ heat treatment during LPBF. High resolution analysis and synchrotron experiments on specimens manufactured in this process window revealed a major proportion of nano-sized Al<sub>3</sub>(Sc<sub>x</sub>Zr<sub>1−x</sub>) solute-clusters were already present in the as-built state, as predicted by simulation. Supported by this experimental research, the new processing concept of in-situ heat treatment yielded the highest recorded strength values combined with high ductility directly after LPBF for Scalmalloy®. This advancement in LPBF enables highly complex, thin-walled structures directly made from a high-strength, lightweight material, which is not possible with conventional processes that require a subsequent heat treatment cycle.</p>