Amorphization in equiatomic high entropy alloys

Vaidya, Mayur ; Armugam, Senthil ; Kashyap, Sanjay ; Murty, B. S. (2015) Amorphization in equiatomic high entropy alloys Journal of Non-Crystalline Solids, 413 . pp. 8-14. ISSN 0022-3093

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Amorphization behavior in equiatomic high entropy alloys has been investigated. Pseudo-binary FeCrNi–M–B alloys and true equiatomic high entropy compositions FeCrNi–M–Si (M = Co, Mn, Nb, Ti, Zr) have been synthesized using mechanical alloying. Formation of amorphous phase has been confirmed using X-ray diffraction analysis and transmission electron microscopy. All alloys containing Si showed significant amorphization. Fe80B20 is known to be a good glass former, but no amorphous phase was observed in Fe–B based alloys except for FeCrNiNbB. The slower kinetics of dissolution of B in the alloy due to its sluggish diffusivity caused by its higher melting point is attributed to be the reason for the poor amorphization in B containing alloys.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:High Entropy Alloys; Amorphization; Glass Forming Ability; Mechanical Alloying
ID Code:110956
Deposited On:06 Dec 2017 11:09
Last Modified:06 Dec 2017 11:09

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