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The kinetics of two-stage formation of TiAl3 in multilayered Ti/Al foils prepared by accumulative roll bonding

Yang, Dengke, Hodgson, Peter and Wen, Cui'e 2009, The kinetics of two-stage formation of TiAl3 in multilayered Ti/Al foils prepared by accumulative roll bonding, Intermetallics, vol. 17, no. 9, pp. 727-732, doi: 10.1016/j.intermet.2009.02.015.

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Title The kinetics of two-stage formation of TiAl3 in multilayered Ti/Al foils prepared by accumulative roll bonding
Formatted title The kinetics of two-stage formation of TiAl3 in multilayered Ti/Al foils prepared by accumulative roll bonding
Author(s) Yang, Dengke
Hodgson, Peter
Wen, Cui'e
Journal name Intermetallics
Volume number 17
Issue number 9
Start page 727
End page 732
Total pages 6
Publisher Elsevier Ltd
Place of publication Oxford, England
Publication date 2009-09
ISSN 0966-9795
1879-0216
Keyword(s) Intermetallics, miscellaneous
Trialuminides
Rolling
Calorimetry
Summary The solid-state reactions of Ti/Al multilayered samples produced by Accumulative Roll Bonding (ARB) have been investigated using differential scanning calorimetry, X-ray diffraction and scanning electron microscopy. The kinetics of the formation of the intermetallic compound TiAl3 was highlighted. Experimental evidence and analysis of the data shows that, there was a two-stage process in the formation of TiAl3 in the ARB Ti/Al reactive multilayered samples. Calorimetric and microstructural analyses also suggest that the interdiffusion of Al and Ti which led to solid solutions preceded the formation of intermetallic compounds. Despite the apparent chaos in the thickness of the ARB multilayered samples, the distribution of layer spacing did not become broad enough to lose the main features of the double exothermal behaviour. Isothermal DSC shows a larger Avarami constant in ARB Ti/Al multilayered structures than was found in Ti/Al thin films. A modified model based on thin films was set up to describe the kinetic characteristics of the formation of the intermetallic compound TiAl3 in ARB samples.
Language eng
DOI 10.1016/j.intermet.2009.02.015
Field of Research 091202 Composite and Hybrid Materials
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2009, Elsevier Ltd.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30025562

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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Created: Wed, 24 Mar 2010, 14:29:50 EST by Sandra Dunoon

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