Viewpoint: experimental recovery of geometrically necessary dislocation density in polycrystals

被引：167

作者：

El-Dasher, BS ^{[1
]}

Adams, BL

Rollett, AD

机构：

[1] Carnegie Mellon Univ, Dept Mat Sci & Engn, Pittsburgh, PA 15213 USA

[2] Brigham Young Univ, Dept Engn Mech, Provo, UT 84602 USA

来源：

SCRIPTA MATERIALIA | 2003年 / 48卷 / 02期

基金：

美国国家科学基金会;

关键词：

dislocations; aluminum; grain boundaries; electron backscattering diffraction;

D O I：

10.1016/S1359-6462(02)00340-8

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Application of electron backscattering diffraction methods to recover estimates of the geometrically necessary dislocation density is described. The limitations of the method arising from the opacity of crystalline materials and the spatial and angular resolution limits are discussed. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：141 / 145

页数：5

共 11 条

[1]

ASHBY MF, 1970, PHILOS MAG, V21, P339

[2]

Demirel M., 2000, Studies on the Accuracy of Electron Backscatter Diffraction Measurements, ppp 65, DOI DOI 10.1007/978-1-4757-3205-4_6

[3]

ELDASHER B, IN PRESS SCRIPTA MAT

[4] STRAIN GRADIENT PLASTICITY - THEORY AND EXPERIMENT [J].

FLECK, NA ;

MULLER, GM ;

ASHBY, MF ;

HUTCHINSON, JW .

ACTA METALLURGICA ET MATERIALIA, 1994, 42 (02) :475-487

[5]

Kroner E., 1958, Continuum Theory of Dislocations and Self-Stresses

[6]

MURA T, 1987, MICROMECHANICS DEFEC, P338

[7] SOME GEOMETRICAL RELATIONS IN DISLOCATED CRYSTALS [J].

NYE, JF .

ACTA METALLURGICA, 1953, 1 (02) :153-162

[8] Use of electron channelling contrast imaging to assess near-surface mechanical damage [J].

Simkin, BA ;

Crimp, MA .

PHILOSOPHICAL MAGAZINE LETTERS, 2000, 80 (06) :395-400

[9] Mesoscale investigation of the deformation field of an aluminum bicrystal [J].

Sun, S ;

Adams, BL ;

Shet, C ;

Saigal, S ;

King, W .

SCRIPTA MATERIALIA, 1998, 39 (4-5) :501-508

[10] Observations of lattice curvature near the interface of a deformed aluminium bicrystal [J].

Sun, S ;

Adams, BL ;

King, WE .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 2000, 80 (01) :9-25

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