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Effect of grain size on the competition between twinning and detwinning in nanocrystalline metals

Ni, S., Wang, Y., Liao, X., Li, H., Figueiredo, R., Ringer, S., Langdon, T. and Zhu, Y. (2011) Effect of grain size on the competition between twinning and detwinning in nanocrystalline metals Physical Review B, 84, (23), 235401-[4pp]. (doi:10.1103/PhysRevB.84.235401).

Record type: Article

Abstract

Both twinning and detwinning have been reported to occur during the deformation of nanocrystalline (nc) face-centered-cubic metals. This raises the issue of how these two processes compete with each other. Here, we report that the twinning process dominates in a certain range of grain sizes, whereas, the detwinning process dominates outside of this range to annihilate all twins. These experimental observations establish a full spectrum of grain-size effects on deformation twinning and detwinning and are explained by the deformation physics. They also provide a fundamental basis for understanding and designing the mechanical behavior of nc metals and alloys

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Published date: December 2011
Organisations: Engineering Science Unit

Identifiers

Local EPrints ID: 337563
URI: http://eprints.soton.ac.uk/id/eprint/337563
ISSN: 1550-235X
PURE UUID: 6b9799f8-f398-4198-8bc9-40261f5a2c4a
ORCID for T. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 27 Apr 2012 13:33
Last modified: 18 Jul 2017 06:02

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Contributors

Author: S. Ni
Author: Y. Wang
Author: X. Liao
Author: H. Li
Author: R. Figueiredo
Author: S. Ringer
Author: T. Langdon ORCID iD
Author: Y. Zhu

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