Ultrafine-Grained AlCoCrFeNi2.1 Eutectic High-Entropy Alloy

• The development of microstructure and mechanical properties was investigated in a heavily cold-rolled and annealed AlCoCrFeNi2.1 high-entropy alloy. The as-cast alloy having a eutectic morphology consisting of alternate bands of ordered L1(2) and B2 phases was 90% cold-rolled. The deformed microstructure showed profuse shear banding and disordering of the L12, but no transformation of the B2 phase. A duplex microstructure consisting of ultrafine equiaxed grains (similar to 0.60 mu m) of disordered face centered cubic and B2 was observed after annealing at 800 degrees C. The annealed material showed remarkable strength-ductility combination having ultimate tensile strength similar to 1.2 GPa and elongation to failure similar to 12%.

Subject headings

NATURVETENSKAP  -- Biologi -- Etologi (hsv//swe)

NATURAL SCIENCES  -- Biological Sciences -- Behavioural Sciences Biology (hsv//eng)

NATURVETENSKAP  -- Kemi -- Materialkemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences -- Materials Chemistry (hsv//eng)

Keyword

recrystallization

deformation

Cold-Rolling

behavior

ductility

Annealing

texture evolution

Ordered Phases

Properties

phase-stability

High-Entropy Alloys

microstructure

Materials Science

Publication and Content Type

art (subject category)

ref (subject category)