FINITE ELEMENT ANALYSIS OF SUPERPLASTIC FORMING OF TITANIUM ALLOYS

Super Plastic Forming is the process of undergoing large uniform elongation prior to necking and fracture tension. Super Plasticity is the ability of a polycrystalline material to exhibit, in a generally isotropic manner though there are some works reported on anisotropic behavior also, very large elongations without necking prior to failure. Super Plasticity in sheet metals offers advantages for forming complex shapes easily in high strength alloys, as a regular production process. The focus of the present work is to generate pressure-time diagram and stress strain curve for Titanium alloys. The sheets are formed in single and double (Diffusion bonding) with different thickness. The results obtained from the FE analysis is used as input to experimental analysis. The formed shapes are in accordance with the FE results