| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
ICME-based Titanium Alloys and Processes Design
|
| Presentation Title |
Physics Based ICME for Similar and Dissimilar Ti-alloy Linear Friction Welding |
| Author(s) |
Jerry E. Gould, Michael Eff |
| On-Site Speaker (Planned) |
Jerry E. Gould |
| Abstract Scope |
Linear friction is a well-established technology for titanium gas turbine engine component assembly. Applications include both similar and dissimilar alloy combinations. Understanding the impact of processing conditions as well as the influence of dissimilar materials can be greatly aided by relatively simple modeling tools. In this work, an integrated computational materials engineering solution for linear friction welding has been developed based on approximations for both heat transfer and material mechanical response at elevated temperatures. The heat transfer methodology includes a one-dimensional analysis and a Zener approximation for temperature gradients in the workpieces. The material response approximation allows fitting of flow stresses as a function of temperature with an arc-hyperbolic sine function. The resulting model allows prediction of temperature excursions and burn-of characteristics or both similar and dissimilar joints. |