Plastic deformation of polycrystalline alumina introduced by scaled-down drop-weight impacts.pdf (449.69 kB)

Plastic deformation of polycrystalline aluina introduced by scaled-down drop-weight impacts

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journal contribution
posted on 22.04.2016 by James Wade, Stuart Robertson, Ying Zhu, Houzheng Wu
We present our findings after scaled-down drop-weight tests, performed under relatively low loading conditions and employing a small-scale spherical indenter as a projectile, to boost the strain rate and energy density of the impact, resulted in the generation of a cavity of measurable depth on the surface of a pure, fully dense, alumina ceramic. We demonstrate that activated dislocations are a main contributor in the formation of the residual impression with an estimated maximum density of ~4.02×1014 m−2.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Published in

Materials Letters

Volume

175

Pages

143 - 147 (4)

Citation

WADE, J. ... et al, 2016. Plastic deformation of polycrystalline aluina introduced by scaled-down drop-weight impacts. Materials Letters, 175, pp. 143 - 147.

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

02/04/2016

Publication date

2016

Notes

This paper was accepted for publication in the journal Materials Letters and the definitive published version is available at http://dx.doi.org/10.1016/j.matlet.2016.04.023

ISSN

1873-4979

Language

en

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