Damping Properties of Ductile Cu-Al-Mn-Based Shape Memory Alloys
Damping Properties of Ductile Cu-Al-Mn-Based Shape Memory Alloys
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DOI：
10.2320/matertrans.46.118
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发表时间：
2005-01
影响因子：
1.2
通讯作者：
N. Koeda;T. Omori;Y. Sutou;Hidekazu Suzuki;M. Wakita;R. Kainuma;K. Ishida
中科院分区：
文献类型：
--
作者：
N. Koeda;T. Omori;Y. Sutou;Hidekazu Suzuki;M. Wakita;R. Kainuma;K. Ishida
使用动态机械谱仪（DMS）研究了 Cu-Al-Mn 基合金的阻尼性能 tan，其中 tan 几乎等于内耗 Q � 1。研究发现，母体+马氏体两相态和马氏体单相态之间，频率和应变幅值对tanare的依赖性存在显着差异，即两相态tanis主要受频率影响，马氏体态主要受应变幅影响。还发现相对晶粒尺寸 d=D 是阻尼能力的函数，其中 d 和 D 分别是晶粒直径和线材直径，并且 tan 随着 d=D 的增加而增加。在d=D≤1的试样中，tan≤1/40:54和tan≤1/40:07的最大值分别在两相状态和马氏体状态下获得。
The damping property tanof Cu-Al-Mn-based alloys, where tanis nearly equal to internal friction Q � 1 , was investigated using a Dynamic Mechanical Spectrometer (DMS). It was found that the dependences of frequency and strain amplitude on tanare significantly different between the parent + martensite two-phase and the martensite single-phase states, i.e., tanis mainly influenced by frequency in the two-phase state and by strain amplitude in the martensite state. It was also found that the relative grain size d=D is a function of the damping capacity, where d and D are the grain diameter and the diameter of the wire, respectively, and that tanincreases with increasing d=D. The maximum values of tan � ¼ 0:54 and tan � ¼ 0:07 were obtained in the two-phase state and in the martensite state, respectively, in the specimen of d=D � 1.