Effect of heat treatment on the microstructure of an Fe-40Al-0.7C-0.5B alloy

Authors
Pang, LX Kumar, KS
Citation
Lx. Pang et Ks. Kumar, Effect of heat treatment on the microstructure of an Fe-40Al-0.7C-0.5B alloy, MAT SCI E A, 258(1-2), 1998, pp. 161-166
Citations number
8
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN journal
09215093 → ACNP
Volume
258
Issue
1-2
Year of publication
1998
Pages
161 - 166
Database
ISI
SICI code
0921-5093(199812)258:1-2<161:EOHTOT>2.0.ZU;2-0
Abstract
The effect of heat treatment on the microstructure of an extruded Fe-40Al-0 .7C-0.5B (at.%) alloy was investigated. Four types of precipitates were fou nd to be present in the B2 matrix in the as-extruded condition. These were Fe3AlC0.5 with the perovskite structure, Fe2B, a tetragonal boride with the CuAl2 structure, graphite (free carbon), and a new tetragonal phase (nu) t hat is likely coherent with the matrix. In addition, fringe contrast was ob served, both in the matrix and within the precipitates and is thought to ar ise from the presence of stacking faults. The stability of these precipitat es and the faults following various heat treatments was determined. (C) 199 8 Elsevier Science S.A. All rights reserved.