Open AccessArticle
Ti-Al Composite Wires with High Specific Strength
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Tom Marr, Jens Freudenberger, Dirk Seifert, Hansjörg Klauß, Jan Romberg, Ilya Okulov, Juliane Scharnweber, Andy Eschke, Carl-Georg Oertel, Werner Skrotzki, Uta Kühn, Jürgen Eckert and Ludwig Schultz
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Abstract
An alternative deformation technique was applied to a composite made of titanium and an aluminium alloy in order to achieve severe plastic deformation. This involves accumulative swaging and bundling. Furthermore, it allows uniform deformation of a composite material while producing a wire which
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An alternative deformation technique was applied to a composite made of titanium and an aluminium alloy in order to achieve severe plastic deformation. This involves accumulative swaging and bundling. Furthermore, it allows uniform deformation of a composite material while producing a wire which can be further used easily. Detailed analysis concerning the control of the deformation process, mesostructural and microstructural features and tensile testing was carried out on the as produced wires. A strong grain refinement to a grain size of 250–500 nm accompanied by a decrease in 〈111〉 fibre texture component and a change from low angle to high angle grain boundary characteristics is observed in the Al alloy. A strong increase in the mechanical properties in terms of ultimate tensile strength ranging from 600 to 930 MPa being equivalent to a specific strength of up to 223 MPa/g/cm3 was achieved.
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