Modeling of Aging Treatment of Flow-Formed AA6061 Tube

摘要

Flow-forming is a chipless metal forming process which employs an incremental rotary point deformation technique. An annealed AA6061 aluminum tubing preform was cold flow-formed into a seamless tube. A multiple pass flow-forming was performed. The strength of the flow-formed tube was altered by performing artificial aging treatment. The present research investigates the possibility of using response surface methodology (RSM) for predicting the hardness of the artificially aged flow-formed tube. Experiments were performed to investigate the effect of aging process parameters like solution time (ST), aging time (AT) and aging temperature (ATEMP) on the hardness of the flow-formed tube after artificial aging treatment. Experimental plan is performed by a standard RSM design called Box-Behnken Design. The results of analysis of variance (ANOVA) indicate that the proposed regression model obtained can adequately predict hardness values within the limits of the factors being studied.