Transmission electron microscopic investigation of the microstructure of Fe-Cr-Al alloys

被引：12

作者：

Wittmann, R

Spindler, S

Fischer, B

Wagner, H

Gerthsen, D

Lange, J

Brede, M

Klöwer, J

Schunk, P

Schimmel, T

机构：

[1] Univ Karlsruhe, Lab Elektronenmikroskopie, D-76128 Karlsruhe, Germany

[2] Fraunhofer Inst Angew Mat Forsch, D-28717 Bremen, Germany

[3] Krupp VDM GMBH, D-58762 Altena, Germany

[4] Univ Karlsruhe, Inst Angew Phys, D-76128 Karlsruhe, Germany

来源：

JOURNAL OF MATERIALS SCIENCE | 1999年 / 34卷 / 08期

关键词：

D O I：

10.1023/A:1004559108952

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure of different Fe-Cr-Al alloys in the composition range of 0 to 18 at % Cr and 7 to 25 at % Al was investigated by transmission electron microscopy (TEM). By systematically varying the compositions, the location of the order-disorder transition was determined. Dark field images confirmed that many samples consisted of a two-phase mixture of small DO3-ordered particles in a disordered A2 matrix. The mottled contrast exhibited by some samples and sometimes taken as a proof of the existence of ordered particles is shown to be produced by an artefact due to the TEM sample preparation. (C) 1999 Kluwer Academic Publishers.

引用

页码：1791 / 1798

页数：8

共 26 条

[1] Effect of alloying on aqueous corrosion and mechanical behaviour of iron aluminide Fe3Al [J].