Localized Plasticity Autowaves Evolution in Aluminium

被引：0
|
作者：
Zuev, L. B. [1 ]
Barannikova, S. A. [1 ]
Kolosov, S. V. [1 ]
机构：
[1] Russian Acad Sci, Inst Strength Phys & Mat Sci, Siberian Branch, Tomsk, Russia
来源：
RUSSIAN PHYSICS JOURNAL | 2023年 / 66卷 / 02期
关键词：
plastic flow localization; autowaves; aluminum; strain; polycrystals; STRAIN;
D O I：
10.1007/s11182-023-02924-1
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The kinetics of plastic flow localization foci in polycrystalline Al is investigated at room temperature via double-exposure speckle photography. Plastic flow instability in the form of periodically changing spatiotemporal local deformation distribution is detected at parabolic hardening and pre-failure stages. The variation in autowave length and local elongation coefficient is found with the increase of total deformation. The evolution of the plastic flow at the final stage as an unstable cycle is discussed in the framework of the autowave plasticity model.
引用
收藏
页码：186 / 190
页数：5
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