E. Crist, D. Li, R. Porter, J. W. Bennett, P. A. Russo, RMI Titanium Company, Niles, OH
Fine-grain Ti-6Al-4V sheet has several advantages compared to conventional sheet when used to produce super-plastically formed parts. These advantages include lower forming temperatures due to finer grains, less surface oxidation and subsequently less yield loss. Computer modeling has been utilized to assist in the development of fine grain Ti-6Al-4V sheet by optimizing rolling parameters and pass schedules. These modeling studies together with production trials have allowed fine-grain Ti-6Al-4V sheet to be successfully produced.
Summary: Fine-grain Ti-6Al-4V sheet has several advantages compared to conventional sheet when used to produce super-plastically formed parts. These advantages include lower forming temperatures due to finer grains, less surface oxidation and subsequently less yield loss. Computer modeling has been utilized to assist in the development of fine grain Ti-6Al-4V sheet by optimizing rolling parameters and pass schedules. These modeling studies together with production trials have allowed fine-grain Ti-6Al-4V sheet to be successfully produced.
