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Damping Behavior Of A Ti-richTi-Ni Binary Shape Memory Alloy

X.M.He, M.S.Li, S.B.Guo and S.F.Zhang

Shape memory alloys attract increasing interest as materials that can be used for passive as well as active damping applications. The internal friction spectra of TiNi shape memory alloy (SMA), which involves thermoelastic martensitic transformation, can be divided into three different terms: intrinsic, transitory and phase transition. In this work, the damping behavior of Ti50.5Ni49.5 (at.%) SMA has been investigated using dynamic mechanical analyzer instrument. The internal friction spectra of a Ti-rich Ti50.5Ni49.5 SMA have been discussed quantitatively and divided into intrinsic and transitory contributions using an iterative method. ï›™ 2006 Trade Science Inc. - INDIA