Characteristics of coincident site lattice grain boundaries developed during equal channel angular pressing of magnesium single crystals

被引：63
|
作者：
Ostapovets, A. [1 ]
Seda, P. [1 ,2 ]
Jaeger, A. [1 ]
Lejcek, P. [1 ]
机构：
[1] ASCR VVI, Inst Phys, Prague 18221 8, Czech Republic
[2] Prague Inst Chem Technol, Dept Met & Corros Engn, CR-16628 Prague 6, Czech Republic
来源：
SCRIPTA MATERIALIA | 2011年 / 64卷 / 05期
关键词：
Magnesium; Equal channel angular pressing; Electron backscattered diffraction; Coincidence site lattice boundaries; Single crystal; ALLOY; MICROSTRUCTURE;
D O I：
10.1016/j.scriptamat.2010.11.011
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Distributions of near-coincidence grain boundaries that occur during equal channel angular pressing in magnesium single crystals at 503 K are investigated. The coincidence boundaries with the [0 0 0 1] misorientation axis are frequent in the sample after passage of the shear plane and recrystallization. In contrast, twin boundaries dominate in the end parts of the samples. Existence of a 30 degrees peak in the misorientation angle distribution is explained by a relatively high frequency of Sigma 13a boundaries and partially by the appearance of Sigma 15a boundaries. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：470 / 473
页数：4
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