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On the mechanism of superelasticity in gum metal
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Talling, R. J., Dashwood, R. J., Jackson, M. and Dye, D.. (2009) On the mechanism of superelasticity in gum metal. Acta Materialia, Vol.57 (No.4). pp. 1188-1198. ISSN 1359-6454
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Official URL: http://dx.doi.org/10.1016/j.actamat.2008.11.013
Abstract
The deformation mechanisms of the beta-Ti alloy, Gum metal, were investigated with the aid of in situ synchrotron X-ray diffraction (SXRD) and transmission electron microscopy (TEM). SXRD showed that Gum metal undergoes it reversible stress-induced martensitic (alpha '') phase transformation. Oxygen increases the resistance to shear by increasing C' and limits the extent of alpha '' growth. Prior deformation aids alpha '' formation of by providing nuclei, such as {112} < 111 > twins and stress-induced omega plates. The formation of twins and omega plates, both observed in TEM, are believed to be a result of a low G(111) in this alloy. Features similar to the "giant faults" seen previously were observed in TEM their formation is believed to be a result of {112} < 111 > shear. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved,
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) T Technology > TN Mining engineering. Metallurgy |
| Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) |
| Journal or Publication Title: | Acta Materialia |
| Publisher: | Pergamon |
| ISSN: | 1359-6454 |
| Official Date: | February 2009 |
| Volume: | Vol.57 |
| Number: | No.4 |
| Number of Pages: | 11 |
| Page Range: | pp. 1188-1198 |
| Identification Number: | 10.1016/j.actamat.2008.11.013 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| Funder: | Systems Engineering for Autonomous Systems (SEAS) Defence Technology Centre of the UK Ministry of Defence, U.S. Office of Naval Research |
| Grant number: | N00014-04-1-0155 (U.S. ONR) |
| URI: | http://wrap.warwick.ac.uk/id/eprint/28360 |
Data sourced from Thomson Reuters' Web of Knowledge
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