The strain amplitude dependent damping in iron
The strain amplitude dependent damping in iron
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DOI：
10.1080/14786437108217424
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发表时间：
1971-12
影响因子：
1.6
通讯作者：
C. Burdett
中科院分区：
文献类型：
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作者：
C. Burdett
在频率约为1HZ的条件下，测定了多晶纯铁的应变振幅阻尼与晶粒尺寸的关系，并表明它由两个阶段组成。在低应变幅下，阻尼遵循Granato-Lucke定律，但在较高应变幅下，阻尼可以用Peguin、Perez和Gobin（1967）假设的模型来解释。第一阶段向第二阶段过渡的应变幅随晶粒尺寸的增大而减小。通过对第二阶段阻尼的分析，计算出激活体积为1·3 × 10−21 cm 3。
Abstract The strain amplitude dependent damping in pure polycrystalline iron has been determined as a function of grain size at a frequency of approximately 1 HZ, and has been shown to consist of two stages. At low strain amplitudes the damping follows the Granato–Lucke law but at higher strain amplitudes the damping can be explained in terms of the model postulated by Peguin, Perez and Gobin (1967). The strain amplitude at which stage one gives way to stage two decreases with increasing grain size. From an analysis of the second stage of damping an activation volume of 1·3 × 10−21 cm3 has been calculated.