|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Materials for High Temperature Applications: Next Generation Superalloys and Beyond
||Microstructure–property Relationship in Next Generation TiAl Alloys
||Soumya Nag, Akane Suzuki, Manuel Acosta, Michael Weimer, Bernard Bewlay
|On-Site Speaker (Planned)
In the recent years, extensive investigations of TiAl alloys have led to their commercial implementation in the aerospace and automobile industries. Next generation alloys with an improved balance of mechanical and environmental properties has been achieved via major (group VB and VIB) and minor (group IIIA and IVA) elemental additions. In the present study the relationship between microstructure and room and elevated temperature tensile properties was investigated for several cast and heat-treated 2nd-generation TiAl alloys with modified chemistries. Property variation was observed based on the type of microstructure (near-lamellar vs duplex) and specimen location (prepared near or far from center of cast slab). Quantitative microstructural characterization of these specimens were conducted via electron back-scatted diffraction, scanning electron microscopy and polarized light microscopy.