Cyclicity of the Dislocation Restructuring in Necking in an HCP Zr-Nb Alloy

被引：1
|
作者：
Poletika, T. M. [1 ]
Girsova, S. L. [1 ]
Pshenichnikov, A. P. [1 ]
机构：
[1] Russian Acad Sci, Siberian Branch, Inst Strength Phys & Mat Sci, Tomsk 634021, Russia
来源：
TECHNICAL PHYSICS | 2011年 / 56卷 / 05期
关键词：
GRAIN-GROWTH; DEFORMATION; STRAIN; MICROSTRUCTURE; DIFFRACTION; TEXTURE;
D O I：
10.1134/S1063784211050276
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Cyclic dislocation transformations are detected in the deformation macrolocalization zone during tension of a Zr-1% Nb alloy, and this cyclicity is accompanied by periodic relaxation of internal stresses as a result of the decomposition of sub-boundaries and dislocation redistribution. The oscillatory instability of deformation localization in the hardening-softening mode at the parabolic stage of plastic flow in zirconium alloys is found to be related to the cyclicity of dislocation transformations in the macrolocalization zone during its transformation into a neck.
引用
收藏
页码：646 / 651
页数：6
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