Distinct Recrystallization Kinetics in Ni–Co–Cr–Fe-Based Single-Phase High-Entropy Alloys

Yang, Zhongsheng; He, Feng; Wu, Qingfeng; Zhang, Kaiwei; Guo, Bojing; Han, Bin; Li, Junjie; Wang, Jincheng; Wang, Zhijun

doi:10.1007/s11661-021-06341-2

Cited by 13 publications

(1 citation statement)

References 43 publications

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“…where M represents the Taylor factor (3.06) that converts shear stress to normal stress, α is a constant (0.26), G is the shear modulus estimated as 85 GPa for this HEA [59] and ρ is the dislocation density, which was estimated to be ~10 12 m -2 . The estimates of the dislocation density from the EBSD and XRD analysis are of the same order of magnitude.…”

Section: Deformation Mechanisms Of Heamentioning

confidence: 99%

High strength and ductility in partially recrystallized Fe40Mn20Cr20Ni20 high-entropy alloys at cryogenic temperature

Ma¹,

Yang²,

Wang³

et al. 2022

Microstructures

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The effects of cold rolling and subsequent annealing on the microstructures and mechanical properties of Fe40Mn20Cr20Ni20 high-entropy alloys (HEAs) are investigated. The Cr-rich secondary phases with a tetragonal structure (σ phases) in the Fe40Mn20Cr20Ni20 HEAs are precipitated upon annealing at 600 °C-900 °C for 2 h. The prepared Fe40Mn20Cr20Ni20 HEA annealed at 800 °C for 2 h after cold rolling has a good combination of strength and elongation, with a high yield strength of 438 MPa, a high ultimate tensile strength of 676 MPa, and an excellent elongation to fracture of 32%. The mechanical properties at cryogenic temperature are better than those at room temperature. Typically, for the incompletely recrystallized alloy annealed at 700 °C, the yield strength, tensile strength, and elongation after fracture are increased by 26%, 22%, and 100%, respectively. This trend mainly depends on dislocation and twinning strengthening. The σ phases also improve the cryogenic tensile properties. Furthermore, the recrystallization kinetics of the Fe40Mn20Cr20Ni20 HEAs are explored to correlate with the deformation behavior.

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Section: Deformation Mechanisms Of Heamentioning

confidence: 99%