Hardening of an Al<inf>0.3</inf>CoCrFeNi high entropy alloy via high-pressure torsion and thermal annealing

Authors: Tang, Q.H., Huang, Y., Huang, Y.Y., Liao, X.Z., Langdon, T.G. and Dai, P.Q.

Journal: Materials Letters

Volume: 151

Pages: 126-129

eISSN: 1873-4979

ISSN: 0167-577X

DOI: 10.1016/j.matlet.2015.03.066

Abstract:

Abstract High-pressure torsion (HPT) and thermal annealing were applied to a face-centered cubic as-cast Al0.3CoCrFeNi high entropy alloy. Processing by HPT produced a nanostructure with a higher incremental hardness than in most HPT single-phase materials and subsequent annealing at appropriate temperatures gave an ordered body-centered cubic secondary phase with an additional increase in hardness. The highest hardness after HPT and annealing was approximately four times higher than for the as-cast alloy.

Source: Scopus

Hardening of an Al<sub>0.3</sub>CoCrFeNi high entropy alloy via high-pressure torsion and thermal annealing