AMPLITUDE-DEPENDENT INTERNAL-FRICTION AND PLASTICITY OF CRYSTALS

被引：4
作者：
KARDASHEV, BK
KUSTOV, SB
LEBEDEV, AB
NIKANOROV, SP
机构：
[1] A.F. Ioffe Physico-Technical Institute, Russian Academy of Sciences, St. Petersburg
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 1994年 / 211卷
关键词：
D O I：
10.1016/0925-8388(94)90453-7
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effects of temperature, prestrain and in situ plastic deformation on the amplitude dependences of the internal friction and Young's modulus defect were studied on a number of alkali halides and metals at a frequency of about 10(5) Hz. In order to study the effect of the frequency the amplitude dependence of internal friction and Young's modulus defect were investigated at 10(-3)-10 Hz. The correlation between micro- and macroplasticity is discussed. These results are considered phenomenologically on the basis of the assumption that dislocations overcome long- and short-range obstacles by means of force and thermofluctuation mechanisms.
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页码：83 / 89
页数：7
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