Effect of Working Temperature on Damping Capability of M2052 Alloy
The effects of working temperature on damping capacity of M2052 alloy as-annealed were studied by olympus optical microscope,XRD and reversal torsion pendulum.The results show that the damping capacity of M2052 alloy is good at room temperature.The damping capacity is rapidly improved with the increase of torsional strain amplitude,and remains unchanged with further increase of torsional strain amplitude.When working temperature is below the temperature of martensite transformation to austenite of M2052 alloy,with the increase of temperature,twin crystal density decreases,the number of the interface of twin crystal reduces,damping capacity decreases.When working temperature is above the temperature of martensite transformation to austenite,martensite begins to transform to austenite.The interface between parent phase and martensite(P/M) and martensite and martensite(M/M) decrease,and twin crystal continues to decrease,the damping capacity of M2052 alloy accelerates to decline.