Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5457548 | Intermetallics | 2017 | 6 Pages |
Abstract
Liquid-phase separation in a CoCrCuFeNi high entropy alloy is evidenced by supercooling method. The CoCrCuFeNi high entropy alloy is supercooled by glass fluxing method with a sample mass about 100Â g which allows tensile test at different undercoolings. The microstructure evolution of CoCrCuFeNi high entropy alloy solidified at different undercoolings are investigated. The variation of interdendritic Cu-rich phase and the hardness of the dendrites are described in detail and liquid-phase separation is confirmed to have taken place when undercooling is equal or greater than 100Â K. The plasticity and elastic modulus during tensile tests are strongly affected by compositional change upon liquid-phase separation. The samples solidified after liquid-phase separation exhibit much higher plasticity and lower elastic modulus.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Tong Guo, Jinshan Li, Jun Wang, Yi Wang, Hongchao Kou, Sizhe Niu,