HREM STUDY OF DISPERSOIDS IN CRYOMILLED OXIDE DISPERSION-STRENGTHENED MATERIALS

被引：29

作者：

SUSEGG, O

HELLUM, E

OLSEN, A

LUTON, MJ

机构：

[1] RAUFOSS A-S,N-2831 RAUFOSS,NORWAY

[2] EXXON RES & ENGN CO,ANNANDALE,NJ 08801

来源：

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES | 1993年 / 68卷 / 02期

关键词：

D O I：

10.1080/01418619308221210

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thin platelets (dispersoids) only a few atomic layers thick formed in cryomilled oxide dispersion strengthened aluminium, have been investigated by high-resolution electron microscopy (HREM). In order to interpret the experimental images, computer simulations of HREM images based on different structure models have been carried out. The image simulations have been used to determine the composition and the structure of the dispersoids. Two types of dispersoids have been found: one type consists of a single layer of nitrogen with the nitrogen atoms in tetrahedral positions in aluminium, the other type consists of one single layer of oxygen with the oxygen atoms in octahedral positions in aluminium.

引用

页码：367 / 380

页数：14

共 16 条

[1] FOURIER IMAGES .1. THE POINT SOURCE [J].