Search Results - "Bischoff, Ewald"

Octapod-shaped, nanosized, amorphous precipitates in a crystalline ferrite matrix by Meka, Sai Ramudu, Bischoff, Ewald, Rheingans, Bastian, Mittemeijer, Eric Jan

“…The development of uniquely octapod-shaped nanosized amorphous silicon-nitride precipitates in a ferrite matrix was observed upon nitriding of Fe-4.5at.%Si…”
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Interrelationships of defects, nitride modification and excess nitrogen in nitrided Fe-4.75 at.% Al alloy by Meka, Sai Ramudu, Bischoff, Ewald, Hosmani, Santosh S., Mittemeijer, Eric Jan

“…In order to investigate the influence of crystal-lattice defects (dislocations) and of a relatively large Al content on the development of different…”
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Unusual precipitation of amorphous silicon nitride upon nitriding Fe-2at.%Si alloy by Meka, Sai Ramudu, Jung, Kyung Sub, Bischoff, Ewald, Mittemeijer, Eric Jan

“…Silicon-nitride precipitation in ferritic Fe-2at.%Si alloy was investigated upon nitriding in NH 3 /H 2 gas mixtures, using light microscopy, hardness…”
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Continuous and discontinuous precipitation in Fe-1 at.%Cr-1 at.%Mo alloy upon nitriding; crystal structure and composition of ternary nitrides by Steiner, Tobias, Meka, Sai Ramudu, Rheingans, Bastian, Bischoff, Ewald, Waldenmaier, Thomas, Yeli, Guma, Martin, Tomas L., Bagot, Paul A. J., Moody, Michael P., Mittemeijer, Eric J.

“…The internal nitriding response of a ternary Fe-1 at.%Cr-1 at.%Mo alloy, which serves as a model alloy for many CrMo-based steels, was investigated. The…”
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Nitride Formation and Excess Nitrogen Uptake After Nitriding Ferritic Fe-Ti-Cr Alloys by Jung, Kyung Sub, Meka, Sai Ramudu, Schacherl, Ralf E., Bischoff, Ewald, Mittemeijer, Eric J.

“…The microstructure of the nitrided zone of Fe-Ti-Cr alloys, containing a total of 0.30 at. pct (Ti + Cr) alloying elements, with varying Ti/Cr atomic ratio…”
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Site Occupation Reversal in the C14 Laves Phase Nb(Cr1-xCox)2 by Kerkau, Alexander, Grüner, Daniel, Ormeci, Alim, Prots, Yurii, Borrmann, Horst, Schnelle, Walter, Bischoff, Ewald, Grin, Yurii, Kreiner, Guido

“…The C14 phase Nb(Cr1–xCox)2 forms within a broad homogeneity range of 0.127(3) ≤ x ≤ 0.937(8) at 1100 °C. The distribution of chromium and cobalt atoms on the…”
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Grain boundary faceting close to the Σ3 coincidence misorientation in copper by Straumal, Boris B., Polyakov, Sergei A., Bischoff, Ewald, Mittemeijer, Eric J.

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Orientation Imaging Microscopy of Alpha Alumina: Sample Preparation and Texture Analysis by Mulvihill, Maureen L., Gülgün, Mehmet A., Bischoff, Ewald, Rühle, Manfred

“…Orientation imaging microscopy (OIM) was used to study hot isostatically pressed (HIP) 99.99 % α-Al . A sample preparation procedure for nonconducting ceramics…”
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Highly retarded crystallization in hydrogenated amorphous germanium; emergence of a porous nanocrystalline structure by Keita, Al-Saleh, Wang, Zumin, Phillipp, Fritz, Bischoff, Ewald, Mittemeijer, Eric J.

“…The thermal crystallization of heavily hydrogenated, amorphous Ge (a-Ge:H) and ultra-pure amorphous Ge (a-Ge) thin films was investigated, on a comparative…”
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Diffraction stress analysis of highly planar-faulted, macroscopically elastically anisotropic thin films and application to tensilely loaded nanocrystalline Ni and Ni(W) by Kurz, Silke Julia Birgit, Welzel, Udo, Bischoff, Ewald, Mittemeijer, Eric Jan

“…The presence of planar faults complicates the diffraction stress analysis enormously owing to fault‐induced displacement, broadening and asymmetry of the Bragg…”
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Nanoscale planar faulting in nanocrystalline Ni–W thin films: Grain growth, segregation, and residual stress by Welzel, Udo, Kümmel, Johannes, Bischoff, Ewald, Kurz, Silke, Mittemeijer, Eric Jan

“…Pure Ni and Ni–W thin films with different W contents (<22 at.%) and a thickness of 500 nm have been produced by (co)sputtering. The phase composition, changes…”
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Unusual nucleation and growth of γ′ iron nitride upon nitriding Fe-4.75 at.% Al alloy by Meka, Sai Ramudu, Bischoff, Ewald, Schacherl, Ralf Erich, Mittemeijer, Eric Jan

“…The influence of substitutionally dissolved Al in ferritic Fe-4.75 at.% Al alloy on the nucleation and growth of γ′ iron nitride (Fe 4 N 1− x ) was…”
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Precipitation of Co from supersaturated Au 90 Co 10 : microstructure and kinetics by Bauer, Rico, Bischoff, Ewald, Mittemeijer, Eric Jan

“…Abstract The kinetics of the precipitation of Co from a supersaturated solid solution of Au-10.12 at.% Co was investigated by differential scanning calorimetry…”
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Precipitation of Co from supersaturated Au sub(90)Co sub(10): microstructure and kinetics by Bauer, Rico, Bischoff, Ewald, Mittemeijer, Eric Jan

“…The kinetics of the precipitation of Co from a supersaturated solid solution of Au-10.12 at.% Co was investigated by differential scanning calorimetry upon…”
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Formation Mechanisms of Alloying Element Nitrides in Recrystallized and Deformed Ferritic Fe-Cr-Al Alloy by Akhlaghi, Maryam, Meka, Sai Ramudu, Jägle, Eric A., Kurz, Silke J. B., Bischoff, Ewald, Mittemeijer, Eric J.

“…The effect of the initial microstructure (recrystallized or cold-rolled) on the nitride precipitation process upon gaseous nitriding of ternary Fe-4.3 at. pct…”
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Precipitation of Co from supersaturated Au90Co10: microstructure and kinetics by Bauer, Rico, Bischoff, Ewald, Mittemeijer, Eric Jan

“…The kinetics of the precipitation of Co from a supersaturated solid solution of Au-10.12 at.% Co was investigated by differential scanning calorimetry upon…”
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Examination of phase transformations in the system Fe-N-C by means of nitrocarburising reactions and secondary annealing experiments; the α + ε two-phase equilibrium by NIKOLUSSI, Marc, LEINEWEBER, Andreas, BISCHOFF, Ewald, JAN MITTEMEIJER, Eric

“…The until now controversially discussed existence of the two-phase equilibrium alpha-Fe + epsilon-Fe3(N, C)1+x in the ternary system Fe-N-C was proven by the…”
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Phase transformation of mixed Cr1-xAlxN nitride precipitates in ferrite by CLAUSS, A. R, BISCHOFF, E, SCHACHERL, R. E, MITTEMEIJER, E. J

“…Nitriding of specimens with the composition Fe-1.5 wt% Cr-1.5 wt% Al (Fe-1.6 at.% Cr-3.1 at.% Al) at 853 K leads to the formation of mixed, ternary Cr1-xAlxN…”
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Examination of phase transformations in the system Fe–N–C by means of nitrocarburising reactions and secondary annealing experiments; the α + ∊ two-phase equilibrium by Nikolussi, Marc, Leineweber, Andreas, Bischoff, Ewald, Jan Mittemeijer, Eric

“…The until now controversially discussed existence of the two-phase equilibrium α-Fe + ∊-Fe (N, C) +x in the ternary system Fe – N – C was proven by the…”
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Normal and excess nitrogen uptake by iron-based Fe-Cr-Al alloys: the role of the Cr/Al atomic ratio by Jung, K.S., Schacherl, R.E., Bischoff, E., Mittemeijer, E.J.

“…Upon nitriding ferritic iron-based Fe-Cr-Al alloys, containing a total of 1.50 at. % (Cr + Al) alloying elements with varying Cr/Al atomic ratio (0.21-2.00),…”
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