Details

Autor(en) / Beteiligte

• Tang, Q.H.
• Huang, Y.
• Huang, Y.Y.
• Liao, X.Z.
• Langdon, T.G.
• Dai, P.Q.

Titel

Hardening of an Al0.3CoCrFeNi high entropy alloy via high-pressure torsion and thermal annealing

Ist Teil von

• Materials letters, 2015-07, Vol.151, p.126-129

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2015

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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. •An Al0.3CoCrFeNi alloy (HEA) was nanostructured by high-pressure torsion (HPT).•The HPT HEA exhibits a higher hardness increment than most single-phase materials.•A combination of HPT and annealing significantly strengthens the HEA hardness.•The highest hardness after HPT and annealing is ~4 times over for the as-cast HEA.