In-situ monitoring of phase transformation in Ti-6Al-6V-2Sn using laser ultrasonics

Abstract

Titanium is of great interest for metal processing industries due to its superior material properties, but it is also quite expensive. Therefore, a detailed knowledge of phase transformation and consequential the distribution of and phase in titanium alloys is crucial for their material properties and as a consequence for further processing steps. Measuring the ultrasonic velocity and attenuation by laser ultrasonics technology (LUS) as a non-destructive and non-contact technique, it is possible to qualitatively monitor in-situ the phase transformation during heating the sample from room temperature up to . We validate LUS methodology against high energy X-ray diffraction as well as against conventional metallurgic measurements and get excellent agreement between the results of these methods.

Keywords:

• Laser ultrasound
• titanium
• phase transformation
• HEXRD

Notes

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the ‘K-Project for non-destructive testing and tomography plus’ supported by COMET program of FFG [843540] and the federal government of Upper Austria and Styria and by the project ‘multimodal and in-situ characterization of inhomogeneous materials’ (MiCi) by the federal government of Upper Austria and the European Regional Development Fund (EFRE) in the framework of the EU-program IWB2020.