Journal
MATERIALS
Volume 14, Issue 13, Pages -Publisher
MDPI
DOI: 10.3390/ma14133541
Keywords
high-entropy alloy; aluminide; silicide
Categories
Funding
- [A2_FCHT_ 2020_035]
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The novel high-entropy alloy based on Fe-Al-Si-Ni-Ti shows high compressive strength and excellent wear resistance, but with brittleness. It exhibits good plasticity at high temperatures.
Novel high-entropy (multi-principal elements) alloy based on Fe-Al-Si-Ni-Ti in equimolar proportions has been developed. The alloy powder obtained by mechanical alloying is composed of orthorhombic FeTiSi phase with the admixture of B2 FeAl. During spark plasma sintering of this powder, the FeSi phase is formed and the amount of FeAl phase increases at the expense of the FeTiSi phase. The material is characterized by a high compressive strength (approx. 1500 MPa) at room temperature, being brittle. At 800 degrees C, the alloy is plastically deformable, having a yield strength of 459 MPa. The wear resistance of the material is very good, comparable to the tool steel. During the wear test, the spallation of the FeSi particles from the wear track was observed locally.
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