Phase stability in high entropy alloys: Formation of solid-solution phase or amorphous phase

CoCrFeMnNi HEA NPs–AC were synthesized facilely with FCC solid solution phase and outstanding catalytic performance. The time required to reduce MB concentration can be as short as 12 min with the kobs of 0.191 min−1 for the 10 wt% catalyst.

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Formation of soft magnetic high entropy amorphous alloys composites containing in situ solid solution phase

Journal of Magnetism and Magnetic Materials ◽

10.1016/j.jmmm.2017.09.065 ◽

2018 ◽

Vol 449 ◽

pp. 63-67 ◽

Cited By ~ 13

Author(s):

Ran Wei ◽

Huan Sun ◽

Chen Chen ◽

Juan Tao ◽

Fushan Li

Keyword(s):

Solid Solution ◽

Amorphous Alloys ◽

Solution Phase ◽

Solid Solution Phase ◽

Soft Magnetic ◽

High Entropy

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TENSILE AND COMPRESSIVE MECHANICAL BEHAVIOR OF A CoCrCuFeNiAl0.5 HIGH ENTROPY ALLOY

International Journal of Modern Physics B ◽

10.1142/s0217979209060774 ◽

2009 ◽

Vol 23 (06n07) ◽

pp. 1254-1259 ◽

Cited By ~ 53

Author(s):

FANGJUN WANG ◽

YONG ZHANG ◽

GUOLIANG CHEN ◽

HYWEL A. DAVIES

Keyword(s):

Solid Solution ◽

Solution Phase ◽

High Entropy Alloy ◽

Solid Solution Phase ◽

Face Centered Cubic ◽

Compressive Properties ◽

Large Plastic Strain ◽

High Entropy ◽

Strain Limit ◽

Face Centered

A high entropy alloy of composition CoCrCuFeNiAl 0.5 is mainly composed of a face centered cubic (FCC) solid solution phase. The tensile and compressive properties of the alloy were investigated; the alloy exhibited a tensile strength of 707 MPa, together with a large plastic strain limit of 19%.

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Transition alpha structure in beta-isomorphous Nb-Hf alloys

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100126068 ◽

1987 ◽

Vol 45 ◽

pp. 232-233

Author(s):

R.W. Carpenter ◽

Changhai Li ◽

David J. Smith

Keyword(s):

Solid Solution ◽

Solution Phase ◽

Miscibility Gap ◽

Large Strains ◽

Solid Solution Phase ◽

Two Phase ◽

Diffuse Intensity ◽

Metastable Form ◽

The Matrix ◽

Equilibrium Morphology

Binary Nb-Hf alloys exhibit a wide bcc solid solution phase field at temperatures above the Hfα→ß transition (2023K) and a two phase bcc+hcp field at lower temperatures. The β solvus exhibits a small slope above about 1500K, suggesting the possible existence of a miscibility gap. An earlier investigation showed that two morphological forms of precipitate occur during the bcc→hcp transformation. The equilibrium morphology is rod-type with axes along <113> bcc. The crystallographic habit of the rod precipitate follows the Burgers relations: {110}||{0001}, <112> || <1010>. The earlier metastable form, transition α, occurs as thin discs with {100} habit. The {100} discs induce large strains in the matrix. Selected area diffraction examination of regions ∼2 microns in diameter containing many disc precipitates showed that, a diffuse intensity distribution whose symmetry resembled the distribution of equilibrium α Bragg spots was associated with the disc precipitate.

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