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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.1
- 수록면
- 982 - 986 (5page)
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The compressive deformation behavior of a single phase CrMnFeCoNi high-entropy alloy (HEA) is investigatedusing experimental and theoretical approaches. The equiaxed microstructures are observed using optical microscope,electron backscattered diffraction, and synchrotron X-ray diffraction (XRD) techniques. Compressiveresults reveal that the CrMnFeCoNi HEA has a high strain-hardening exponent in spite of its large grain sizedue to increased dislocation density and severe lattice distortion. The compressive texture of the HEA resemblesthose of typical FCC metals. The phenomenological dislocation-based constitutive model well describes thecompressive deformation behavior. The predicted dislocation density is in good quantitative agreement with theexperimental value measured using whole-profile fitting of synchrotron XRD peaks. It can be confirmed fromthe experimental and theoretical findings that the deformation mechanism of the CrMnFeCoNi HEA is theconventional dislocation glide and mechanical twinning is negligible contrary to general belief.
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