TY - JOUR
T1 - Deformation of CoCrFeNi high entropy alloy at large strain
AU - Wang, Bing
AU - He, Haiyan
AU - Naeem, Muhammad
AU - Lan, Si
AU - Harjo, Stefanus
AU - Kawasaki, Takuro
AU - Nie, Yongxing
AU - Kui, H.W.
AU - Ungár, Tamás
AU - Ma, Dong
AU - Stoica, Alexandru D.
AU - Li, Qian
AU - Ke, Yubin
AU - Liu, Chain Tsuan
AU - Wang, Xun-Li
PY - 2018/10
Y1 - 2018/10
N2 - The deformation behavior of an equi-atomic face-centered-cubic CoCrFeNi high entropy alloy was investigated by in-situ neutron diffraction under tensile loading up to 40% applied strain. A three-stage deformation behavior was fully captured by lattice strain and texture evolution. In spite of the chemical complexity, the deformation in CoCrFeNi is dominated by dislocation activities. Analysis of diffraction and microscopy data shows that the deformation progresses from dislocation slip to severe entanglement, where a sharp increase in dislocation density was observed. The neutron diffraction data, corroborated by transmission electron microscopy analysis, provided microscopic insights of the previously reported three-stage hardening behavior.
AB - The deformation behavior of an equi-atomic face-centered-cubic CoCrFeNi high entropy alloy was investigated by in-situ neutron diffraction under tensile loading up to 40% applied strain. A three-stage deformation behavior was fully captured by lattice strain and texture evolution. In spite of the chemical complexity, the deformation in CoCrFeNi is dominated by dislocation activities. Analysis of diffraction and microscopy data shows that the deformation progresses from dislocation slip to severe entanglement, where a sharp increase in dislocation density was observed. The neutron diffraction data, corroborated by transmission electron microscopy analysis, provided microscopic insights of the previously reported three-stage hardening behavior.
UR - https://scholars.cityu.edu.hk/en/publications/deformation-of-cocrfeni-high-entropy-alloy-at-large-strain(5e2fcefe-0155-43c4-8370-cffaafd78bb6).html
U2 - 10.1016/j.scriptamat.2018.06.013
DO - 10.1016/j.scriptamat.2018.06.013
M3 - Article
SN - 1359-6462
JO - Scripta Materialia
JF - Scripta Materialia
ER -