|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||GAT-2017 (Gamma Alloys Technology - 2017)
||Fracture and Fatigue Crack Growth Behavior of Wrought Gamma Titanium Aluminide Ti-43Al-4Nb-1Mo in Different Microstructure Conditions
||Matthew Dahar, Thomas Podbesek, Sesh Tamirisakandala, John Lewandowski
|On-Site Speaker (Planned)
Ti-43Al-4Nb-1Mo (TNM) is a third generation wrought gamma titanium aluminide being used for high performance gas turbine engine low-pressure turbine blades. This study summarizes the room temperature tension, fracture, and fatigue crack growth behavior of TNM at various stages of processing. Tension and bend bar samples were machined from the longitudinal and transverse directions of as-cast, post-hot isostatic pressing (HIP), and forge plus heat treated conditions. Fatigue crack growth tests were conducted over a range of load ratio (R) values in order to determine the dependence of fatigue threshold, Paris slope, and stress intensity at overload (Kc) on R. Optical and SEM examinations were used to determine the microstructure, fracture path, and topography and compare mechanistic behavior of TNM in various conditions.
||Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)