Dislocation motions in 5-fold planes of icosahedral Al-Pd-Mn

被引：17

作者：

Caillard, D

Roucau, C

Bresson, L

Gratias, D

机构：

[1] Off Natl Etud & Rech Aerosp, LEM, CNRS, F-92322 Chatillon, France

[2] LEO, CEMES, Toulouse, France

来源：

ACTA MATERIALIA | 2002年 / 50卷 / 18期

关键词：

D O I：

10.1016/S1359-6454(02)00268-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Dislocations moving in 5-fold planes of icosahedral AlPdMn have been observed in in situ heating TEM experiments. Similar dislocations forming a deformation band in the as-grown material have been analyzed in bright field and in LACBED conditions. Their Burgers vectors are translations of the 6-dimensional hyperlattice, with components in the physical space along 2-fold directions out of the plane of motion. Dislocations have accordingly moved by climb, presumably with a difficult jog-pair nucleation. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：4499 / 4509

页数：11

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