Microband evolution during large plastic strains of stable {110} ⟨1 1 2⟩ Al and Al-Mn crystals

被引：51

作者：

Albou, A. ^{[1
]}

Driver, J. H. ^{[1
]}

Maurice, C. ^{[1
]}

机构：

[1] Ecole Mines, CNRS, Ctr SMS, UMR 5146, F-42023 St Etienne, France

来源：

ACTA MATERIALIA | 2010年 / 58卷 / 08期

关键词：

Microstructure; Microbands; Disorientation; EBSD; Aluminium; ROLLED POLYCRYSTALLINE ALUMINUM; PLANAR DISLOCATION BOUNDARIES; GRAIN-ORIENTATION DEPENDENCE; LOW-ANGLE BOUNDARIES; DEFORMATION; ALIGNMENT; EBSD; MICROSTRUCTURE;

D O I：

10.1016/j.actamat.2010.01.034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The deformation microstructures or Al and Al-Mn {1 1 0}< 1 1 2 > single crystals have been characterized after room temperature channel-die compression up to true strains of 2 1 The evolution of local misorientations and microband structures were quantified by high-resolution electron backscatter diffraction in a field emission gun scanning electron microscope and their alignments compared with the traces of active slip planes and macroscopic shear stress planes During plane-strain compression these "Brass" oriented crystals remain stable in terms of the final, average, orientation, with a small orientation spread However, the microband alignment varies with strain and also with solute content There is a general tendency for the microbands to be both crystallographic and non-crystallographic at low strains, then crystallographic, and finally mixed again at high strains (with some lamellar banding) (C) 2010 Acta Materialia Inc Published by Elsevier Ltd All rights reserved

引用

页码：3022 / 3034

页数：13

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