Combined scanning probe microscopy and electron microscopy study of microstructure evolution in copper processed by equal channel angular pressing
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Eugen Rabkin
,
David Gorni
Abstract
We produced submicrocrystalline Cu using the equal channel angular pressing technique with four passes. The as-deformed samples exhibited a high yield strength > 400 MPa and a poor elongation before failure < 20%. The majority of the grain boundaries after equal channel angular pressing were of the low-angle type. A series of heat treatments in the temperature range 220 – 300 °C was performed and partly recrystallized microstructures with different fractions of recrystallized grains were obtained. The microstructures were analyzed by a combination of transmission electron microscopy, orientation image microscopy, light microscopy and scanning probe microscopy. The increase in ductility in partly recrystallized samples was accompanied by a decrease in the yield strength. It was suggested that to obtain a bulk nanocrystalline material which is both strong and ductile the majority of the grain boundaries should be of the high-angle type. It is shown that the scanning probe microscopy technique allows one to determine the microstructure of partly and fully recrystallized samples and to draw qualitative conclusions about the defects density and their distribution in the sample.
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Prof. G. Gottstein and Dr. D. Kirch of the Technische Hochschule Aachen are heartily acknowledged for their help with the OIM. Helpful discussions with Prof. J. Driver from Ecole des Mines de St. Etienne are heartily appreciated. The authors are thankful to Ms A. Gabelev for her help during the experiments. This research was partly supported by the Center for Absorption in Science, Ministry of Immigrants Absorption, Slate of Israel.
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© 2003 Carl Hanser Verlag, München
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- Depth-resolved residual stress evaluation from X-ray diffraction measurement data using the approximate inverse method
- Combined scanning probe microscopy and electron microscopy study of microstructure evolution in copper processed by equal channel angular pressing
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- Personal/ Personelles
- Information
- Books/Bücher
- Conferences /Konferenzen
Articles in the same Issue
- Frontmatter
- Articles/Aufsätze
- An atomistic Monte Carlo simulation of precipitation in a binary system
- Thermodynamic assessment of the Pd–Zr system
- Cyclic deformation and dislocation structure evolution of a copper bicrystal with components rotating gradually along the grain boundary
- Microstructural characterization of alloys of the quasibinary Cu–NiBe system
- Microstructural characterisation and thermal stability of a metastable Mg-8.6 wt.% Zr alloy produced by physical vapour deposition
- Development of microstructure in solution-heat-treated Mg-5Al-xCa alloys
- The effect of Ti alloying on the mechanical properties and microstructure of a Zn–Al–Cu–Mg alloy
- Dry wear response of a Zn-based alloy containing 37.5% Al as affected by sliding conditions
- Microstructure selection map for rapidly solidified Al-rich Al–Sr alloys
- Dependence of the microstructure, residual stresses and texture of AA 6013 friction stir welds on the welding proces
- The effect of carbon on the restoration phenomena during hot deformation of carbon steels
- Deformation behavior during hot torsion of an ultrahigh carbon steel containing 1.3 wt.% C
- Effect of impact damage on electrical resistivity of C/C–SiC composites
- Depth-resolved residual stress evaluation from X-ray diffraction measurement data using the approximate inverse method
- Combined scanning probe microscopy and electron microscopy study of microstructure evolution in copper processed by equal channel angular pressing
- Notifications/Mitteilungen
- Personal/ Personelles
- Information
- Books/Bücher
- Conferences /Konferenzen
