|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advances in Titanium Technology
||The Intermediate Temperature Mechanical Behaviour of a near-α Titanium Alloy: Experiments and Modeling
||Priyanka Agrawal, Karthikeyan Subramanian, Dipankar Banerjee
|On-Site Speaker (Planned)
Deformation of engineering α+β titanium alloys has been inadequately studied in the temperature range 623-823K even though this is a typical domain of application temperatures of these alloys in aeroengines. In this study, the mechanical behavior of a near α-titanium alloy IMI 834 is explored in this intermediate regime of temperature over an extended strain rate and strain space through constant strain rate and creep tests. Dynamical solute-dislocation interactions are observed to affect the mechanical response over this 3D space of temperature, strain, and strain rate dominated by jogged-screw dislocations. Through experiments and analytical modeling using Friedel’s model for breakaway stress, the current work has established a continuum of dislocation mechanisms based on jogged screw dislocation glide that determines mechanical behavior over a wide range of strain rates ranging from 10-2 to 10-9 s-1 and temperatures from 623-773K in engineering titanium alloys.
||Titanium, Mechanical Properties, Characterization