|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||Advances in Titanium Technology
||On the Heterogeneous and Cooperative Deformation in High-strength (α+β) Titanium Alloys
||John W. Foltz, Shaolou Wei, C Cem Tasan, Bhuvi Nirudhoddi
|On-Site Speaker (Planned)
(α+β) titanium alloys demonstrate diverse microstructural combinations that enable fruitful pathways to engineer the macroscopic load-bearing performances. However, plastic deformation coordination between α- and β-phases remain unclear, especially the underlying deformation micro-events that cause plastic strain inhomogeneity. Recent high-strength cold-workable titanium alloys developed by ATI (ATI 425®, ATI Titan 27TM) further trigger the fundamental interest in elucidating the underlying plasticity micro-mechanisms. By systematically assessing these two alloys and their processing variants using integrated in situ micro-DIC, in situ synchrotron X-ray diffraction, and crystallographic calculations, we will showcase the explorations of the following three fundamental topics: (1) what are the predominant deformation micro-events leading to plastic strain inhomogeneity; (2) what are the micro-mechanical consequences of interdependent plastic deformation modes? and (3) what are the microstructural and chemical dependencies of these plasticity micro-mechanisms. Broader indications for processing-microstructure-property correlations in cold-workable (α+β) titanium alloys will also be discussed.
||Titanium, Mechanical Properties,