PHASE-DIAGRAM, SUPERLATTICES AND ANTIPHASE DOMAINS OF FE3ALX, 0.75-LESS-THAN-OR-EQUAL-TO-X-GREATER-THAN-OR-EQUAL-TO-1.3, INVESTIGATED BY NEUTRON-SCATTERING

被引：15

作者：

HILFRICH, K

PETRY, W

SCHARPF, O

NEMBACH, E

机构：

[1] GKSS FORSCHUNGSZENTRUMS, INST WERKSTOFFORSCH, D-21500 GEESTHACHT, GERMANY

[2] INST MAX VON LAUE PAUL LANGEVIN, F-38042 GRENOBLE, FRANCE

来源：

ACTA METALLURGICA ET MATERIALIA | 1994年 / 42卷 / 03期

关键词：

D O I：

10.1016/0956-7151(94)90270-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The states of order of iron-aluminium-alloys with compositions around Fe3Al have been investigated by neutron scattering. The results lead to the following description of their structures: (i) These alloys have the long-range ordered DO3 structure up to the following temperatures: Fe-0.2Al up to at least 873 K, Fe-0.25Al and Fe-0.3Al up to about 1050 K, atomic fractions of Al are quoted. (ii) Some phase boundaries shown in the current Fe-Al phase diagram turned out to be no phase boundaries at all, but to have bearing only on the size of antiphase domains. There are critical temperatures above which antiphase domain boundaries are in thermodynamic equilibrium. The present results suggest revisions of the current Fe-Al phase diagram.

引用

页码：731 / 741

页数：11

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