Title: High-temperature in situ straining experiments in the high-voltage electron microscope
Authors: Messerschmidt, U ×
Baither, D
Bartsch, M
Baufeld, Bernd
Geyer, B
Guder, S
Wasilkowska, A
Czyrska-Filemonowicz, A
Yamaguchi, M
Feuerbacher, M
Urban, K #
Issue Date: May-1998
Publisher: Springer verlag
Series Title: Microscopy and microanalysis vol:4 issue:3 pages:226-234
Abstract: Design rules are described here for high-temperature straining stages for transmission electron microscopy. Temperatures above 1000 degrees C can be attained by electron bombardment of the specimen grips. Thermal equilibrium can be reached in a short time by carrying off the heat by water cooling. Some applications of this stage are described. Ferroelastic deformation was observed at 1150 degrees C in t' and partially stabilized zirconia, which changes the microstructure for successive dislocation plasticity. In the oxide-dispersion-strengthened alloy INCOLOY MA 956, dislocations are impeded by oxide particles and move smoothly between the particles. At high temperatures, both the resting and traveling times control the average dislocation velocity. In MoSi2 single crystals of a soft orientation, dislocations with 1/2[111] Burgers vectors are created in localized sources and move on {110} planes in a viscous manner. The dislocations in Al-Pd-Mn single quasicrystals are oriented in preferred crystallographic directions and move in a viscous way as well. On the basis of in situ observations, conclusions are drawn for interpreting macroscopic deformation behavior at high temperatures.
ISSN: 1431-9276
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Department of Materials Engineering - miscellaneous
× corresponding author
# (joint) last author

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