HARDNESS OF FATIGUED COPPER POLYCRYSTALS AND THEIR RELATION TO THEIR DISLOCATION-STRUCTURE

被引：3
|
作者：
OBRTLIK, K
BREZINA, J
POLAK, J
机构：
[1] Institute of Physical Metallurgy, Czechoslovak Academy of Sciences
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1990年 / 124卷 / 02期
关键词：
D O I：
10.1016/0921-5093(90)90159-Z
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The Vickers hardness was determined for copper polycrystals cyclically strained at a constant plastic strain amplitude up to fracture. The dependence of the hardness on the plastic strain amplitude exhibits a minimum at a strain of 1 × 10-3 followed by a sharp increase. This is explained in terms of the observed dislocation structure produced during fatigue. Using polishing and sectioning techniques, the same value of hardness has been found on the surface and in the bulk of the material. © 1990.
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页码：L7 / L10
页数：4
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