Fragmentation of crystals upon deformation twinning and dynamic recrystallization

被引：14
|
作者：
Rybin, V. V. [1 ]
Zolotorevskii, N. Yu. [1 ]
Ushanova, E. A. [2 ]
机构：
[1] St Petersburg State Polytech Univ, St Petersburg 195251, Russia
[2] Cent Res Inst Struct Mat Prometei, St Petersburg 191015, Russia
来源：
PHYSICS OF METALS AND METALLOGRAPHY | 2015年 / 116卷 / 07期
基金：
俄罗斯基础研究基金会;
关键词：
fragmentation; deformation twinning; dynamic recrystallization; explosive welding; PLASTIC-DEFORMATION; GRAIN-REFINEMENT; ALLOYS; DISORIENTATIONS; EVOLUTION; PHASE;
D O I：
10.1134/S0031918X1507011X
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The mechanism of the formation of a fragmented structure has been studied using the EBSD analysis on the example of the microstructure of the zone of the welding joint obtained by explosive welding of copper sheets. The process of the structure formation included, besides the formation of boundaries of deformation origin, also deformation twinning and dynamic recrystallization. A method of a computer analysis of the distribution of interfragment misorientations, which makes it possible to determine the partial contributions of different mechanisms of fragmentation and to estimate the parameters of the distribution, is suggested. Based on the analysis performed, it is recommended to select metals inclined to deformation twinning to obtain ultrafine-grained materials.
引用
收藏
页码：730 / 744
页数：15
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