EFFECT OF POST-DEFORMATION ANNEALING TREATMENT ON INTERFACE PROPERTIES AND SHEAR BOND STRENGTH OF Al-Cu BIMETALLIC RODS PRODUCED BY EQUAL CHANNEL ANGULAR PRESSING

Effects of annealing treatment after equal channel angular pressing (ECAP) on the interface properties and shear bond strength of Al/Cu bimetallic rods were investigated. For the as-deformed samples, the one with two passes of ECAP indicated higher shear bond strength. Formation of a layer of intermetallic compounds after annealing treatment is confirmed. In general, by increasing annealing temperature, thickness of intermetallic compounds at the interface increases. Shear bond strength was initially reduced by annealing at ۲۰۰, ۲۵۰ and ۳۰۰ ͦ C and increased at ۳۵۰ ͦ C. With further increase in annealing temperature to ۴۰۰ ͦ C, shear bond strength slightly decreased which is correlated to the increased thickness of the intermetallic compounds.

Keywords:

Bimetallic rod , Annealing , Interface , Shear bond strength.