Abstract
For the laminated metal composite sheets (LMCS) fabricated by dissimilar metals, the roll bonding process has an important impact on the microstructure and mechanical properties, especially on the anisotropy. The 80 layer 1100/7075 composite sheets were fabricated by the conventional single directional and cross accumulative roll bonding (ARB) process. The microstructure, micro-hardness, and anisotropy of mechanical properties of LMCS were investigated and analyzed before and after heat treatment. The effects of cross ARB process on the anisotropy of mechanical properties of dissimilar LMCS were investigated by the comparison with the conventional ARB. The cross ARB can improve the isotropic properties of LMCS, and the elongation are also slightly improved. The research results are helpful in improving the isotropy of mechanical properties and optimizing the roll bonding technologies of dissimilar LMCS.
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