Numerical modelling of enhanced superplastic forming of titanium alloy aerospace parts

Titanium alloys are used to manufacture aerospace components that require high strength at high operating temperatures such as fan blades, heat shields and jet engine exhaust cones. Parts that have complex geometries are commonly formed at high temperature (around 900°C) so as to achieve maximum ductility during the forming process. By applying a small oscillating pressure on the sheet during the forming process, the titanium alloy was shown to deform more uniformly and to a much greater extent than during conventional superplastic forming. The objective of this investigation is to develop numerical simulation models that accurately describe the behaviour of Ti64 during superplastic forming and numerical simulation tools that can reliably predict the outcome of a superplastic forming process with pressure oscillations. The results of this research will ultimately be used to improve process robustness and part quality while reducing cycle time when manufacturing titanium aerospace parts.

Faculty Supervisor:

Daniel Green;William Altenhof

Student:

Partner:

AEM Power Systems Inc

Discipline:

Engineering

Sector:

Professional, scientific and technical services

University:

University of Windsor

Program: