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The influence of annealing time and secondary-rolling reduction ratio on grain boundary character distribution (GBCD) in an FCC CoCrFeMnNi high-entropy alloy were investigated via electron backscatter diffraction (EBSD). The results show that the processing of 10% cold-rolling reduction subsequently with annealing at 1073 K for 10 h induces a high frequency of low coincident site lattice (CSL) boundary with >70%, thereby effectively achieving GBCD optimization. As annealing time increases, low-Σ CSL (Σ ≤29) boundary frequency first decreases and then remains constant at approximately 60%. The secondary-rolling reduction ratio followed by annealing at 1073 K for 10 h also exerts a substantial influence on GBCD. As the reduction ratio increases from 6% to 40%, the low-Σ CSL (Σ ≤29) boundary frequency first increases and then decreases. © 2019 Elsevier Inc.
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Materials Characterization
ISSN: 1044-5803
Year: 2019
Volume: 149
Page: 105-110
3 . 5 6 2
JCR@2019
4 . 8 0 0
JCR@2023
ESI HC Threshold:236
JCR Journal Grade:2
CAS Journal Grade:2
Cited Count:
SCOPUS Cited Count: 14
ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 0
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