|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals, and Materials
||Experimental Determination of Macro-texture in hcp and Cubic Materials Using Ultrasound
||Bo Lan, Fionn P.E. Dunne, Michael J.S. Lowe
|On-Site Speaker (Planned)
The authors’ previous theoretical developments have demonstrated that the ultrasonic wave speeds in an hcp or cubic polycrystal aggregate can be represented as the spherical convolution of its single crystal wave speeds and macro-texture, thus enabling detection of bulk texture information from ultrasonic wave measurements. This presentation advances the development by verifying the theories experimentally. An ultrasonic rig, which is based upon a conventional immersion test setup, has been established for the measurement of wave speed variations in plate-shaped samples, and sophisticated signal processing procedures developed to extract the desired texture as pole figures. Tests have been carried out on single-phased materials including commercially pure Ti, zirconium and austenitic steel, and dual-phased Ti-6Al-4V, with results calibrated against those obtained from the well-established neutron diffraction technique. Very good agreements have been achieved, which confirm the validity of the theories and open up possibilities for various applications.
||Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)