COERCIVE FORCE AND ELECTRICAL-RESISTIVITY OF POLYCRYSTALLINE NICKEL AFTER LOW-TEMPERATURE ULTRASONIC FATIGUE

被引：5

作者：

DEMKIN, VA

机构：

[1] Institute of Metal Physics, Ukrainian Academy of Sciences

来源：

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH | 1991年 / 128卷 / 02期

关键词：

D O I：

10.1002/pssa.2211280213

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Preannealed, predeformed, and polygonized polycrystalline nickel samples are loaded by ultrasound in liquid helium and liquid nitrogen and at RT. Ultrasonic stress amplitudes are sufficient for multiplication of structure imperfections. Defect structure changes are studied using the coercive force technique and the electrical resistivity technique. It is established that the coercive force of nickel is determined principally by the dislocation distribution. A conclusion is made concerning a probable mechanism of point defect generation under the ultrasonic loading.

引用

页码：375 / 382

页数：8

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