Effect of Processing Conditions on the Deep Drawability of Ti-6Al-4V Sheet at Warm Temperatures

Abstract In the current study, fundamental deep drawing characteristics of Ti-6Al-4V alloy sheets were investigated to establish the effect of processing conditions on large size square deep drawn cups . To accomplish this study, FE-simulations (Abaqus) wereperformed to determine optimum blank size, friction coefficient, the gap between punch and die, etc. The simulated processing parameters were verified experimentally. Based on the FE-simulation results, deep drawing was performed with various blank holding loads and sample sizes. In order to improve the formability of Ti-6Al-4V sheet, various lubricant methods were evaluated. Tensile tests and thickness measurements were conducted on the formed sheets. Processing parameters including blank holding force, lubricants, and optimum blank size, were selected to achieve improved drawing quality. With ×the optimum processing condition, a 200mm 200mm cup was deep drawn successfully. Key Words : Titanium, Ti-6Al-4V Sheet, Deep Drawing, FEM-simulation, Abaqus Code, Lubricant