Synthesis and Phase Evolution of High-Entropy Alloys
Author Information
Author(s): Yang Danni, Liao Mingqing, Huang Jingtao, Han Tianyi, Qu Nan, Wang Yalin, Zhu Jingchuan
Primary Institution: Lanzhou University of Technology
Hypothesis
The study investigates the alloying behavior, morphology, and phase evolution of FexCrNiAl high-entropy alloys synthesized by mechanical alloying.
Conclusion
The nanocrystalline FexCrNiAl high-entropy alloy powders were successfully synthesized, showing a transformation from a supersaturated solid solution phase to equilibrium phases upon annealing.
Supporting Evidence
- The powders achieved a crystalline size of ~80 nm after mechanical alloying.
- The mean particle size of the alloyed powders was refined to 1.59 μm.
- The phase transformation occurred during high-temperature annealing, leading to the formation of BCC and ordered BCC (B2) phases.
Takeaway
The researchers made special metal powders that are really tiny and strong, and they found out how these powders change when heated.
Methodology
The powders were synthesized using mechanical alloying followed by high-temperature annealing, and characterized using X-ray diffraction and scanning electron microscopy.
Digital Object Identifier (DOI)
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