Delayed plasticity during nanoindentation of single-phase CoCrFeMnNi high-entropy alloy

Q. F. He; J. F. Zeng; S. Wang; Y. F. Ye; C. Zhu; T. G. Nieh; Z. P. Lu; Y. Yang

doi:10.1080/21663831.2016.1269026

Author(s)

J. F. Zeng
S. Wang
C. Zhu
T. G. Nieh
Z. P. Lu

Related Research Unit(s)

Centre for Advanced Structural Materials

Detail(s)

Original language	English
Pages (from-to)	300-305
Journal / Publication	Materials Research Letters
Volume	5
Issue number	5
Online published	15 Dec 2016
Publication status	Published - 3 Sept 2017

Link(s)

DOI	DOI https://doi.org/10.1080/21663831.2016.1269026 Final Published version
	Check@CityULib
Attachment(s)	Documents 14432477.pdf Final Published version, 1.59 MB, PDF Publisher's Copyright Statement This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85006287913&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(a11d7119-1e8e-41e2-9494-8d568e076574).html

Abstract

Spherical nanoindentation was performed at room temperature to characterize the time-dependent plasticity behavior of the single-phase CoCrFeMnNi high-entropy alloy (HEA). It was observed that incipient plasticity occurred after a period of waiting time in the apparent elastic regime. Through the experimental data, an activation energy ∼ 0.74 eV and an activation volume ∼ 1.54b3 (b = Burgers vector) were extracted for the delayed plasticity. Our results indicate that heterogeneous dislocation nucleation governs the delayed plasticity in the single-phase CoCrFeMnNi, and also provide quantitative insights into viscoplastic behavior and creep mechanisms in HEAs.

Research Area(s)

delayed plasticity, dislocation nucleation, High-entropy alloys, nanoindentation

Citation Format(s)

[ RIS ] [ BibTeX ]

Delayed plasticity during nanoindentation of single-phase CoCrFeMnNi high-entropy alloy. / He, Q. F.; Zeng, J. F.; Wang, S. et al.
In: Materials Research Letters, Vol. 5, No. 5, 03.09.2017, p. 300-305.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review

He, QF, Zeng, JF, Wang, S, Ye, YF, Zhu, C, Nieh, TG, Lu, ZP & Yang, Y 2017, 'Delayed plasticity during nanoindentation of single-phase CoCrFeMnNi high-entropy alloy', Materials Research Letters, vol. 5, no. 5, pp. 300-305. https://doi.org/10.1080/21663831.2016.1269026

He, Q. F., Zeng, J. F., Wang, S., Ye, Y. F., Zhu, C., Nieh, T. G., Lu, Z. P., & Yang, Y. (2017). Delayed plasticity during nanoindentation of single-phase CoCrFeMnNi high-entropy alloy. Materials Research Letters, 5(5), 300-305. https://doi.org/10.1080/21663831.2016.1269026

He QF, Zeng JF, Wang S, Ye YF, Zhu C, Nieh TG et al. Delayed plasticity during nanoindentation of single-phase CoCrFeMnNi high-entropy alloy. Materials Research Letters. 2017 Sept 3;5(5):300-305. Epub 2016 Dec 15. doi: 10.1080/21663831.2016.1269026

He, Q. F. ; Zeng, J. F. ; Wang, S. et al. / Delayed plasticity during nanoindentation of single-phase CoCrFeMnNi high-entropy alloy. In: Materials Research Letters. 2017 ; Vol. 5, No. 5. pp. 300-305.

Download Statistics

No data available