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Microdiffraction, EDS, and HREM Investigation for Phase Identification With the Electron Microscope

Published online by Cambridge University Press:  10 February 2011

P. Ruterana  and
A. Redjaïmia
P. Ruterana*
Affiliation:
LERMAT, ESA-CNRS 6004, Institut des Sciences de la Matière et du Rayonnement, 6 Bd Maréchal Juin, 14050 Caen Cedex, France
A. Redjaïmia
Affiliation:
Laboratoire de Science et Génie des Surfaces, CNRS, Ecole des Mines, Parc de Saurupt, 54042 Nancy Cedex, France LERMAT, ESA-CNRS 6004, Institut des Sciences de la Matière et du Rayonnement, 6 Bd Maréchal Juin, 14050 Caen Cedex, France
*
Author for correspondence: email: ruterana@lermat8.ismra.fr, tel: 33 2 31 45 26 53, fax: 33 2 3145 26 60
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Abstract

Abstract: For micro or nanophase identification, the ideal method is electron microscopy which combines experimental technique and theoretical analysis in order to solve the problem which is typical in non homogeneous materials. In this work, two heterogeneous materials have been investigated: a Fe- 22Cr - 5Ni -0.3Mo - 0.03C (wt%) duplex stainless steel and a 6H-SiC reinforced Al-Cu alloy fabricated by the Ospray technique followed by extrusion and aging. This aging often gives rise to the precipitation of intermetallic compounds some of which can be new phases. Using microdiffraction, EDS and HREM, it was possible to identify two new phases: the orhorhombic τ phase in the heat treated duplex steel and the tetragonal Al7Cu3Zr2 in the reinforced aluminium copper alloy

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 589 , 1999 , 161
Copyright
Copyright © Materials Research Society 2001

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