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April 20, 2026Additive manufacturingOpen Access

Tailoring the microstructure of a eutectic NiAl-(Cr,Mo) alloy processed by electron beam powder bed fusion

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Authors

KFKatharina FieglDIDanylo IonovJVJan Vollhüter

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Overview

Establishes processing methods for improving microstructure in a NiAl-(Cr,Mo) alloy, suggesting enhanced mechanical properties.

Key Points

  • This research aims to establish processing parameters for improving the microstructure of a NiAl-(Cr,Mo) alloy during electron beam powder bed fusion.
  • Investigated processing parameters for PBF-EB of NiAl-(Cr,Mo) alloy.
  • Analyzed the microstructure evolution during in-situ heat treatment.
  • Measured coarsening effects of the (Cr,Mo) phase with varying energy input.
  • Achieved a unique network-like microstructure after initial melting.
  • Coarsening of the (Cr,Mo) phase increases by a factor of 7 at temperatures above 1000 °C.
  • Discontinuous coarsening follows a defined Johnson-Mehl-Avrami-Kolmogorov pattern.
  • Grain refinement was observed, leading to a texture-free microstructure.

Cite This Study

Fiegl et al. (2026) studied this question.

synapsesocial.com/papers/69e5c2d003c2939914028dc7https://doi.org/10.1016/j.addma.2026.105215
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