Thixoforming of spray deposited AlZn 12Cu₂Mg₂ wrought aluminum alloy in semi-solid state

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ÎÄÕÂÒ³Â룺152 - 156

Key words£ºAlZn 12Cu₂Mg₂ alloy£» thixoforming£» spray deposition£» semi solid process

Abstract: The processing parameters were achieved about the thixoforming of spray deposition AlZn 12Cu₂Mg₂ wrought aluminum alloy in semi-solid ingots and the structures and mechanical properties of the analogue work pieces were tested. The optimum heat treatment parameters of the alloy by the optimization experiment were obtained £¨460¤@¡æ being the optimum solution temperature and 12-14¤@h being the optimum artificial aging time£©. The results show that AlZn 12Cu₂Mg₂ alloy can achieve ideal mechanical properties and elongation after solution treatment and aging treatment by semi-solid process. Under 120¤@MPa and at 595-600¤@¡æ, the yield strength and elongation of the heat-treated parts can reach 664¤@MPa and 7.5% respectively.