Sensitivity of ultrasonic attenuation and velocity change to cyclic deformation in pure aluminum

被引：0
|
作者：
Wang, J. [1 ]
Fang, Q.F. [1 ]
Zhu, Z.G. [1 ]
机构：
[1] Chinese Acad of Sciences, Hefei, China
来源：
Physica Status Solidi (A) Applied Research | 1998年 / 169卷 / 01期
关键词：
Deformation - Dislocations (crystals) - Sensitivity analysis - Ultrasonic velocity measurement;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The average dislocation density Λ and loop length L in cyclically deforming Al were derived from the measurement of ultrasonic attenuation and velocity change. With the increase of the cycle number, Λ increases at first and then decreases a little after passing a maximum, while L decreases monotonously. At low cyclic strain amplitudes less than 10-4, Λ and L almost do not change with cycle number. These results show that the measurement of ultrasonic attenuation and velocity change is a useful method to determine the parameters Λ and L in the process of cyclic deformation.
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页码：43 / 48
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