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 α → β phase transformation and consequential the distribution of α and β 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 (LUS) technology as a non-destructive and non-contact technique, it is possible to monitor in-situ the phase transformation with high accuracy during heating the sample from room temperature up to 900 • C. 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.
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