Transmission electron microscopy investigation on dislocation bands in pure Mg

被引：33
|
作者：
Jain, J. [1 ]
Cizek, P. [2 ]
Hariharan, K. [3 ]
机构：
[1] Indian Inst Technol, Dept Appl Mech, New Delhi 110016, India
[2] Deakin Univ, Inst Frontier Mat, Geelong, Vic 3216, Australia
[3] Indian Inst Technol, Dept Mech Engn, New Delhi 110016, India
来源：
SCRIPTA MATERIALIA | 2017年 / 130卷
关键词：
Magnesium; TEM; < c plus a > slip; Cross slip; Dislocations; SITU NEUTRON-DIFFRACTION; CLOSE-PACKED MAGNESIUM; SINGLE-CRYSTALS; ROOM-TEMPERATURE; CORE STRUCTURE; NONBASAL SLIP; HCP METALS; DEFORMATION; PLASTICITY; BEHAVIOR;
D O I：
10.1016/j.scriptamat.2016.11.035
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In the present study, the evidence of complex dislocation band formation in pure Mg has been reported. The transmission electron microscopy investigation suggests that the double cross-slip of < c + a > screw dislocations plays an important role in the evolution of dislocation structure within these bands. The existence of dislocation bands is explained on the basis of instability of slip on a basal slip system, which results in sudden propagation of slip on pyramidal planes. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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页码：133 / 137
页数：5
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