IMPROVEMENT THE FORMABILITY OF ALUMINUM SHEET BY HEAT TREATMENT

Abstract

The effect of annealing at different temperatures on the formability of aluminum sheet of thickness (1.5) mm was studied in this work. Experimental testing including tension test, stretching test by using hemispherical punch without lubricant on the un treated and the annealed specimens. It was noticed that the best annealing temperature is about (275° C), and the best time is about (10) minutes. Improvement of formability occurred due to annealing process on the aluminum sheet.