High-entropy CoCrFeMnNi alloy subjected to high-strain-rate compressive deformation

Shao Pu Tsai, Yu Ting Tsai, Yu Wen Chen, Pin Jung Chen, Po Han Chiu, Chih Yuan Chen, Woei-Shyan Lee, Jien Wei Yeh, Jer Ren Yang

Research output: Contribution to journalArticle

Abstract

Split Hopkinson pressure bar (SHPB) experiments were conducted to investigate the mechanical behavior and microstructure evolution of CoCrFeMnNi alloy (Cantor alloy) under three strain rates (3 × 103, 6 × 103, and 9 × 103 s−1) at room temperature. The corresponding deformed samples were studied mainly by transmission electron microscopy (TEM), with the focus on the defected structures. The results indicate that the flow stress and strain-hardening rate are both significantly dependent on strain rate. Nano-twinning occurred during deformation at 9 × 103 s−1, whereas dislocation-glide was dominant during deformation at 3 × 103 s−1. The transition of deformation modes under different dynamic compression rates is discussed.

LanguageEnglish
Pages193-198
Number of pages6
JournalMaterials Characterization
Volume147
DOIs
Publication statusPublished - 2019 Jan 1

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Chromium Alloys
manganese alloys
Manganese alloys
chromium alloys
cobalt alloys
Cobalt alloys
Chromium alloys
iron alloys
Bridge decks
Iron alloys
strain hardening
High resolution transmission electron microscopy
Strain hardening
strain rate
Strain rate
Entropy
entropy
Transmission electron microscopy
transmission electron microscopy
microstructure

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Tsai, S. P., Tsai, Y. T., Chen, Y. W., Chen, P. J., Chiu, P. H., Chen, C. Y., ... Yang, J. R. (2019). High-entropy CoCrFeMnNi alloy subjected to high-strain-rate compressive deformation. Materials Characterization, 147, 193-198. https://doi.org/10.1016/j.matchar.2018.10.028
Tsai, Shao Pu ; Tsai, Yu Ting ; Chen, Yu Wen ; Chen, Pin Jung ; Chiu, Po Han ; Chen, Chih Yuan ; Lee, Woei-Shyan ; Yeh, Jien Wei ; Yang, Jer Ren. / High-entropy CoCrFeMnNi alloy subjected to high-strain-rate compressive deformation. In: Materials Characterization. 2019 ; Vol. 147. pp. 193-198.
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Tsai, SP, Tsai, YT, Chen, YW, Chen, PJ, Chiu, PH, Chen, CY, Lee, W-S, Yeh, JW & Yang, JR 2019, 'High-entropy CoCrFeMnNi alloy subjected to high-strain-rate compressive deformation' Materials Characterization, vol. 147, pp. 193-198. https://doi.org/10.1016/j.matchar.2018.10.028

High-entropy CoCrFeMnNi alloy subjected to high-strain-rate compressive deformation. / Tsai, Shao Pu; Tsai, Yu Ting; Chen, Yu Wen; Chen, Pin Jung; Chiu, Po Han; Chen, Chih Yuan; Lee, Woei-Shyan; Yeh, Jien Wei; Yang, Jer Ren.

In: Materials Characterization, Vol. 147, 01.01.2019, p. 193-198.

Research output: Contribution to journalArticle

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AU - Tsai, Shao Pu

AU - Tsai, Yu Ting

AU - Chen, Yu Wen

AU - Chen, Pin Jung

AU - Chiu, Po Han

AU - Chen, Chih Yuan

AU - Lee, Woei-Shyan

AU - Yeh, Jien Wei

AU - Yang, Jer Ren

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