In the master's thesis, we studied how hot processing and different cooling rates affect the microstructure of the CuSn20 alloy. We also measured some sound properties to define the influence of different processing procedures and consequently different microstructure on the sound of tuning forks. We chose the CuSn20 alloy because it is used by all the world's cymbal manufacturers to make the best products in the world. We made tuning forks, because making cymbals would be time-consuming and expensive. We performed pressure tests on the Gleeble device, on test samples, then we made tuning forks. The first fork was made directly from a cast part. The second fork was cut from a cast part that was rolled at 750 °C and air cooled. The third fork was made from a cast part that was also rolled at 750 °C after casting and immediately quenched in water. We also prepared samples for examination under a light optical microscope and a scanning electron microscope (SEM). We also made test probes for the tensile test, with the help of which we measured the yield stress, tensile strength, elongation and elastic modulus. We also measured the hardness of the samples using the Vickers method. Finally, we measured the main and first harmonic frequencies and thus assessed the influence of microstructure on the frequency emitted by the tuning forks. Using the equation for calculating the frequency of the tuning fork and the measured elastic modulus, we calculated the predicted frequencies and compared the calculated frequencies with the measured ones.
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