Journal
MEASUREMENT
Volume 195, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.measurement.2022.111115
Keywords
Volume fraction; Titanium alloy; Laser ultrasonic; Velocity; Prediction model
Funding
- National Key Research and Development Plan [2020YFB1713600]
- National Natural Science Foundation of China [51975043]
- China Postdoctoral Science Foundation [2021M69035]
- Fundamental Research Funds for the Central Universities [FRF-TP-19-002A3, FRF-TP-20105A1]
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In this study, samples with different microstructural characteristics were obtained and the volume fraction was calculated using image processing software. The signals from laser ultrasonic experiment were analyzed to establish a prediction model for phase volume fraction.
The volume fraction of the primary a phase affects the mechanical and processing properties of the dual-phase titanium alloy, its online detection is necessary and important for product quality control. In this study, samples with different microstructural characteristics were obtained by solution treated from 920 degrees C to 1000 degrees C, and the volume fraction of the primary a phase was counted by Image-Pro Plus software. Then, calculate the velocity of ultrasonic longitudinal waves in different samples and time-frequency analysis according to the signals obtained from the laser ultrasonic experiment. Finally, a prediction model of the volume fraction of the primary a phase linearly related to the ultrasonic longitudinal wave velocity was established, and the linear fit has a higher R-2 than 0.96. This study can provide a reference for the online detection of phase volume fraction.
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