Influence of Microstructure of TC4 Titanium Alloy on Ultrasonic Velocity and Attenuation

Abstract:

Primeval TC4 titanium alloy was subjected to solution treatment at 1150°C for 1h, followed by water quenching, oil quenching, air cooling and furnace cooling, respectively. The pulse-echo method was carried out to measure ultrasonic longitudinal wave velocities (ν) and attenuation coefficients (α) of these heat-treated samples. The relationship between microstructures of different cooling rates and ultrasonic parameters such as ultrasonic longitudinal wave velocities (ν) and attenuation coefficients (α) was investigated. The results show that the microstructures of heat-treated TC4 alloy were α phase and β boundaries, and the ultrasonic longitudinal velocities and attenuation coefficients of these heat-treated samples, in turn, increased with reducing the cooling rate from water quenching to furnace cooling.

• Periodical: Applied Mechanics and Materials (Volumes 117-119)
• Pages: 1766-1769
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.117-119.1766
• Online since: October 2011
• Authors: Yun Long Ai, Li Liu, Wen He, Bing Liang Liang, Ji Lin Xu
• Keywords: Longitudinal Wave Velocity, Microstructure, TC4 Titanium Alloy, Ultrasonic Attenuation

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