Abstract— Copper-based shape memory alloy with zinc and aluminum was manufactured, plastically deformed, heat treated and characterized in terms of physico-mechanical, structural and micro-structural investigation. Typical martensitic microstructure with twins is revealed by optical and electron microscopy. The presence of the martensite in the structure was further confirmed through X-ray diffraction. Toughness and hardness of the alloy are investigated too. Optimal properties are obtained for the condition of the alloy that was subjected to heat treatment according to the following scheme: annealing at 850 0C and 900 0C (10 min) + quenched in water + aging at 400 0C (1 hour) + air cooling.
Keywords— shape memory, SEM-EDS, hardness, copper-zinc-aluminum alloy, martensitic structure.
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