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Microstructure evaluation in an Al-Li alloy processed by severe plastic deformation

Bogusława Adamczyk-Cieślak ,  Jarosław Mizera ,  Malgorzata Lewandowska ,  Krzysztof J. Kurzydlowski 

Warsaw University of Technology, Faculty of Materials Science and Engineering (InMat), Wołoska 141, Warszawa 02-507, Poland


The high stiffness and low density of Al-Li alloy make them particularly interesting for aircraft applications. Their properties may be improved by grain refinement to nanometer scale. To this end various severe plastic deformation methods can be used. The aim of this work was to describe the microstructure of an Al-Li alloy subjected to two different severe plastic deformation methods.
The Al-1.6wt.%Li alloy was used in this study. It was severely deformed up to strain of ~4. The microstructure was studied using optical and transmission electron microscopy. TEM observations have revealed the grain refinement from 300 μm to below 1 μm. It has also been found that the materials processed in these methods have different mechanical properties.


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Presentation: poster at E-MRS Fall Meeting 2004, Symposium I, by Bogusława Adamczyk-Cieślak
See On-line Journal of E-MRS Fall Meeting 2004

Submitted: 2004-05-19 12:20
Revised:   2009-06-08 12:55