Topic: Characterization of Titanium Aluminide Alloy Components Fabricated by Additive Manufacturing Using Electron Beam Melting:  Aerospace and Automotive High Temperature Applications

Speaker:  Prof. Dr. Lawrence. E. Murr

　　　Materials Research & Technology Institute
　　　　　The University of Texas at Elpaso, USA

Time:  14:00-15:30, (Tues.) 8,June, 2010

Venue:  Room 403, R&D building, IMR CAS

Welcome to attend!

Abstract

Intermetallic, γ-TiAl, equiaxed, small-grain (~2µm) structures with lamellar γ/α2-Ti3Al colonies with average spacing of 0.6 µm have been fabricated by additive manufacturing (AM) using electron beam melting (EBM) of precursor, atomized powder. The residual microindentation (Vickers) hardness (HV) averaged 4.1 GPa corresponding to a nominal yield strength of ~1.4 GPa (~HV/3), and a specific yield strength of 0.37 GPa cm3­/g (for a density of 3.76 g/cm3) in contrast to 0.27 GPa cm3/g for EBM-fabricated Ti-6Al-4V components. These results demonstrate the potential to fabricate near net shape and complex titanium aluminide products directly using EBM technology in important aerospace and automotive applications.