AUTOWAVE MECHANISM OF LOCALIZATION OF LOW-TEMPERATURE PLASTIC DEFORMATION

被引：0
|
作者：
Sarafanov, G. F. [1 ]
Shodin, Yu G. [2 ]
机构：
[1] RAS, Mech Engn Res Inst, Belinskogo 85, Nizhnii Novgorod 603024, Russia
[2] Kozma Minin Nizhny Novgorod State Pedag Univ, Ulyanova 1, Nizhnii Novgorod 603005, Russia
来源：
MATERIALS PHYSICS AND MECHANICS | 2020年 / 46卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
Deformation localization; thermally activated plastic deformation; low temperatures; autowaves; SERRATED DEFORMATION; METALS; INSTABILITY; FLOW;
D O I：
10.18149/MPM.4612020_7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The mechanism of localization of low-temperature plastic deformation is investigated within the framework of the thermal activation model. The localization mechanism is considered as a result of the autowave character of the stationary solution of a system of equations that describes both the processes of thermal conductivity and plastic deformation. It is established that the stationary solution of the initial problem is given by the wave fronts of switching waves of temperature and plastic deformation. It is shown that the considered autowave mechanism determines the process of localization of high-temperature areas of plastic deformation in the cross-section of the sample in the form of either a neck or separate deformation bands.
引用
收藏
页码：64 / 69
页数：6
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