Asymmetric accumulative roll bonding of aluminium-titanium composite sheets

Ng, Hoi Pang, Przybilla, Thomas, Schmidt, Christian, Lapovok, Rimma, Orlov, Dmitry, Höppel, Heinz-Werner and Göken, Mathias 2013, Asymmetric accumulative roll bonding of aluminium-titanium composite sheets, Materials science and engineering A, vol. 576, pp. 306-315, doi: 10.1016/j.msea.2013.04.027.

Attached Files
Name Description MIMEType Size Downloads

Title Asymmetric accumulative roll bonding of aluminium-titanium composite sheets
Author(s) Ng, Hoi Pang
Przybilla, Thomas
Schmidt, Christian
Lapovok, Rimma
Orlov, Dmitry
Höppel, Heinz-Werner
Göken, Mathias
Journal name Materials science and engineering A
Volume number 576
Start page 306
End page 315
Total pages 10
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2013-08-01
ISSN 0921-5093
Keyword(s) Al-Ti
asymmetric accumulative roll bonding
transmission electron microscopy
mechanical properties
diffusion
Summary Aluminium-titanium (Al/Ti) composite sheets were fabricated via asymmetric accumulative roll bonding (AARB), which capitalises on additional shear to enhance plastic deformation. Multi-layers of Al alloy (AA1050) and commercially-pure Ti sheets were alternatively stacked and rolled-bonded with varied roll diameter ratios (dr) ranging from 1 to 2, for up to four passes. Annealing of selected composite sheets was subsequently carried out at 600°C for 24h to compare the rates of solid-state diffusion reactions between Al and Ti components. Mechanical tests revealed that both tensile strength and ductility of the sheets increase systematically with dr. The microstructures and the Al/Ti interfaces of the sheets were analysed in detail using TEM, SEM and FIB techniques. It is shown that not only does AARB lead to a more refined grain size of the Al matrix but also it promotes the development of a nanostructured surface layer on Ti that comprises crystallites of 50-100nm in size, which is otherwise absent in the case of symmetric ARB (i.e. dr=1). The AARB-processed sheets exhibit a larger thickness of the interdiffusion layer at the Al/Ti interfaces than the counterparts processed via the symmetric ARB route, the difference being in excess of 15%. The effects and the implications of AARB processing on mechanical behaviour and diffusion kinetics are discussed with respect to the microstructural evolutions.
Language eng
DOI 10.1016/j.msea.2013.04.027
Field of Research 091207 Metals and Alloy Materials
0912 Materials Engineering
0913 Mechanical Engineering
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2013, Elsevier B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30075982

Document type: Journal Article
Collection: Institute for Frontier Materials
Connect to link resolver
 
Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved.

Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 16 times in TR Web of Science
Scopus Citation Count Cited 20 times in Scopus
Google Scholar Search Google Scholar
Access Statistics: 169 Abstract Views, 2 File Downloads  -  Detailed Statistics
Created: Tue, 17 May 2016, 09:52:28 EST

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.