Modelling and optimization of semi-solid processing of 7075 Al alloy
作者： B Binesh , M Aghaie-Khafri
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摘要: The new modified strain-induced melt activation (SIMA) process presented by Binesh and Aghaie-Khafri was optimized using response surface methodology (RSM) to improve the thixotropic characteristics of semi-solid 7075 alloy. responses namely average grain size shape factor, were considered as functions three independent input variables effective strain, isothermal holding temperature time. Mathematical models for developed regression analysis technique, adequacy validated variance (ANOVA). Calculated results fairly well correlated with experiments. It found that all first- second-order terms parameters interactive strain time statistically significant responses. In order simultaneously optimize responses, desirable values predicted be 5.1, 609 °C 14 min, respectively, when employing desirability function approach. Based on optimization results, a improvement in factor slurry prepared SIMA observed.
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