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

页码：470 / 473

页数：4

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