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arXiv · 2004.02309

Bulk nanostructured AlCoCrFeMnNi chemically complex alloy synthesized by laser-powder bed fusion process

Hyo Yun Jung·Nicolas J. Peter·Eric Gärtner·Gerhard Dehm·Volker Uhlenwinkel·Eric A. Jägle
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Abstract

We report the synthesis of a bulk nanostructured alloy using the laser-powder bed fusion process. The equiatomic AlCoCrFeMnNi chemically complex alloy forms a nanoscale modulated structure, which is homogeneously distributed in the as-built condition. The nanostructure consisted of Al & Ni-rich ordered (B2) and Cr & Fe-rich disordered (A2) BCC phases. The two phases form an interconnected phase-network with coherent interface boundaries. Atom-probe-tomography and aberration-corrected scanning transmission electron microscopy analysis of the spatial distribution of the modulated structure suggests the occurrence of nano-scale spinodal decomposition. These results introduce a direct synthesis of bulk nanostructured alloys with promising geometric flexibility.

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Hyo Yun Jung, Nicolas J. Peter, Eric Gärtner, Gerhard Dehm, Volker Uhlenwinkel, Eric A. Jägle. 2020-04-05. Bulk nanostructured AlCoCrFeMnNi chemically complex alloy synthesized by laser-powder bed fusion process. https://arxiv.org/abs/2004.02309

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