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SEM micrographs of the tensile fracture surfaces after second cycle of anneling and hot rolling—low magnification ×35 with the percentage reduction calculated for each layer: (a) the multilayer composite, (b) EN-AW 6060 (AlMgSi)—high magnification detail—×500, (c) Cu-ETP ½ hard-high magnification detail—×500, and (d) EN-AW 6060 (AlMgSi) ×500.
