Damping properties of Ti50Ni50−xCux alloys utilizing martensitic transformation
Damping properties of Ti50Ni50−xCux alloys utilizing martensitic transformation
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DOI：
10.1016/s0925-8388(03)00280-9
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发表时间：
2003-06
影响因子：
6.2
通讯作者：
I. Yoshida;D. Monma;Keishi Iino;K. Otsuka;M. Asai;Hidekazu Tsuzuki
中科院分区：
文献类型：
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作者：
I. Yoshida;D. Monma;Keishi Iino;K. Otsuka;M. Asai;Hidekazu Tsuzuki
采用低频倒扭摆法研究了成分范围为8 μ m × 20 μ m的Ti50Ni50− xCux形状记忆合金的内耗和弹性模量。观察到的异常大的内部摩擦和大的硬度软化进行了讨论，注意低孪生剪切的B19（正交）马氏体。Ti50Ni30Cu20在峰值温度下获得的大内耗Q−1=0.2，以及IF的肩部温度表明该合金系统是一种良好的阻尼材料，可以在高于室温的温度下使用。
The internal friction (IF) and elastic modulus of rigidity were investigated for Ti50Ni50−xCuxshape memory alloys for the composition range of 8≦x≦20 by utilizing a low frequency inverted torsion pendulum method. The observed extraordinarily large internal friction and large softening in rigidity are discussed, paying attention to low twinning shears of B19 (orthorhombic) martensite. The attained large internal friction Q−1=0.2 for Ti50Ni30Cu20at peak temperature, and the shoulder temperature of IF indicate that the alloy system is a good damping material which can be used at temperatures higher than room temperature.