Results 271 to 280 of about 1,986,691 (307)

Characteristic properties of Cu–Fe alloys as spin glasses

Soviet Journal of Low Temperature Physics, 1980
The electrical resistivity and Hall effect of nontypical “spin glasses” namely copper–iron alloys, have been investigated in the temperature range 4.2−77.3 °K. Low-temperature maxima in the resistivity and the Hall emf have been observed, which is typical of a system with strong interimpurity interactions.
A. V. Vedyaev, V. A. Cherenkov
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Plastic deformation in an Al–Cu–Fe icosahedral alloy

Journal of Materials Research, 1993
Al—Cu—Fe quasicrystalline alloys have been deformed by high-temperature creep between 680 and 740 °C. Deformations greater than 30% were achieved without cracking. Analysis of the data in the quasi-steady state regime reveals power law behavior with a stress exponent of 2.5. The activation energy for deformation was determined to be 640 ± 20 kJ/mole in
J.E. Shield, M.J. Kramer, R.W. McCallum
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A Mossbauer study of early precipitation in Cu-Fe alloy

Journal of Physics: Condensed Matter, 1994
Mossbauer spectroscopy was used to study the early stages of precipitation in Cu-0.6 at.% Fe alloy. A set of data for the concentration of iron in solution was obtained for annealing times from 1 to 105 s at 400 degrees C. The results were interpreted in terms of quenched monovacancies and divacancies.
I Spirov, T Tomov, S Asenov
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An Al13Fe4 phase in the AlCuFe alloy system

Journal of Alloys and Compounds, 1994
The Cu-containing Al13Fe4 phase was studied by X-ray diffractometry, electron microscopy and thermal analysis. The increase in the Cu concentration results in a decrease in the melting temperature. No structural variations were observed in this compound up to a limiting Cu concentration of about 6 at.%. The increase in the Cu content is realized by the
C. Freiburg, B. Grushko
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Self- and Interdiffusion in Ternary Cu-Fe-Ni Alloys

Defect and Diffusion Forum, 2005
Diffusion of Cu, Fe, and Ni radiotracers has been measured in Cu–Fe–Ni alloys of different compositions at 1271 K. The measured penetration profiles reveal grain boundary-induced part along with the volume diffusion one. Correction on grain boundary diffusion was taken into account when determining the volume diffusivities of the components.
Sergiy V. Divinski, Frank Hisker, Christian Herzig, Robert Filipek, Marek Danielewski   +4 more
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The surface tension of liquid Cu–Fe–Sb alloys

Applied Surface Science, 2010
Abstract The results of study on the influence of temperature and iron and antimony on the surface tension of liquid ternary Cu–Fe–Sb systems are presented. The measurements were carried out with the sessile drop method, in a broad range of the alloy additions concentration (Fe and Sb).
Joanna Willner, Grzegorz Siwiec, Jan Botor   +2 more
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Nucleation of Al-Cu-Fe alloy in a drop tube

Journal of Applied Physics, 1994
The undercooling and nucleation of an Al65Cu20Fe15 alloy have been investigated with a 1.2-m-long drop tube. Melted droplets solidified either in vacuum or in helium. Various size samples in the forms of a globule, a fine fiber, and an irregular splat were collected at the bottom of the tube.
F. X. Zhang, R. C. Yu, W. K. Wang
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Liquid phase separation in immiscible Cu–Fe alloys

International Journal of Cast Metals Research, 2017
Cu–Fe binary alloys containing 20–50wt. % Fe were studied by the combination of the melt fluxing and cyclic superheating technique.
Junting Zhang, Xiaochao Cui, Youhong Wang   +2 more
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Mechanical Milling of Quasicrystalline Al-Cu-Fe Alloys

Materials Science Forum, 2014
Ingots of alloys Al-Cu-Fe were obtained by casting in a graphite mold. Mechanical milling of alloy particles in the as-cast state and after homogenization annealing was carried out in planetary ball mill Retsch PM400 in an argon atmosphere. As a result of mechanical milling granules with an average size of 35-40 μm and fine internal microstructure are ...
Pavel Bryantsev, Marina Samoshina
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Magnetization of dilute Cu(Fe) alloys at low temperatures

Physics Letters A, 1971
Abstract The magnetization of several dilute Cu(Fe) alloys was measured in small magnetic fields and at low temperatures. The results are believed to reflect the fundamental behavior of magnetic impurity pairs in dilute alloy systems.
E.C. Hirschkoff, M.R. Shanabarger, O.G. Symko, J.C. Wheatley   +3 more
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