Transformation dislocations in Co-Fe

被引：6

作者：

Heinrich, H ^{[1
]}

Karnthaler, HP

Waitz, T

Kostorz, G

机构：

[1] ETH Zurich, Inst Angew Phys, CH-8093 Zurich, Switzerland

[2] Univ Vienna, Inst Mat Phys, A-1090 Vienna, Austria

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1999年 / 272卷 / 01期

基金：

奥地利科学基金会;

关键词：

transformation dislocations; transmission electron microscopy; Eshelby twist; Co-Fe;

D O I：

10.1016/S0921-5093(99)00474-8

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

High-resolution transmission electron microscopy (HRTEM) studies indicate a compensation of the strain fields of the dislocations involved in the hexagonal close packed to double hexagonal close packed transformation of Co-Fe. In the HRTEM images only the edge component of the dislocations can be determined by Burgers circuits whereas the screw components are expected to cause an Eshelby twist in the thin foils. The influence of the Eshelby twist on HRTEM images was determined by contrast simulations. Dislocation arrangements with compensating screw components can be distinguished form those with non-compensating screw components. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：238 / 243

页数：6

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