Abstract
Both copper and aluminum are widely applicable throughout a variety of industrial and commercial branches, however, joining them in a composite provides the possibility of combining all their advantageous properties in one material. This study investigates uniquely sequenced copper–aluminum clad composite wires, fabricated via rotary swaging technology. The composites were processed at 20 °C and 250 °C to a diameter of 5 mm. Structural observations and the determination of residual stress within both elements of the swaged wires were performed via electron microscopy; the experimental results were correlated with numerical predictions. As shown in the results, both the applied swaging force and temperature affected the plastic flow, which had a direct influence on residual stress and texture development; the Alsheath elements exhibited ideal rolling textures, whereas the Cuwires elements featured ideal shear texture orientation. The grains within both the Alsheath elements of the 5 mm composite wire were refined down to sub-micron size. Structural restoration also had a positive influence on residual stress.
Highlights
Layered composites, referred to as clad composites or hybrid materials, are innovative materials consisting of two or more metal bonds at mutual interfaces
Clad composites are typically used in the aerospace [3], automotive [4], and marine industries [5], as well as in thermal engineering [6], medicine [7], and electrotechnics—multi-layered materials in the form of layered sheets and clad wires or rods are promising for energy transfer [8]
This research study dealt with the numerical and experimental evaluation of the presented 5 mm clad composites, consisting of Alsheath and Cuwires fabricated via rotary swaging at 20 ◦ C and 250 ◦ C
Summary
Referred to as clad composites or hybrid materials, are innovative materials consisting of two or more metal bonds at mutual interfaces. On the other hand, when formed under hot conditions, the elevated temperature can impart the formation and development of intermetallic layers and affect the quality (strength) of the mutual bonding of individual layers [22] For these reasons, the ideal processing temperature, or optimized heat treatment, is typically searched for. Residual stress can develop during deformation processing, as a result of various influencing factors, such as non-uniform heating/cooling, which typically occurs under cold conditions, or is caused by the inhomogeneous distribution of the imposed strain [42] For these reasons, this study focused on a numerical and experimental evaluation of the presented Cu/Al clad composite, evaluating mechanical behaviour, stress–strain conditions, and texture
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