Search Results - "SCHACHERL, R. E"

Nitriding of iron-based ternary Fe–V–Si alloy: The precipitation process of separate nitrides by Schwarz, B., Meka, S.R., Schacherl, R.E., Bischoff, E., Mittemeijer, E.J.

“…Iron-based ternary Fe–V–Si and binary Fe–Si alloy specimens were nitrided in a NH3/H2 gas mixture at 580°C (853K) with a nitriding potential of rN=0.1atm−1/2…”
Get full text

Pore Formation Upon Nitriding Iron and Iron-Based Alloys: The Role of Alloying Elements and Grain Boundaries by Schwarz, B., Göhring, H., Meka, S. R., Schacherl, R. E., Mittemeijer, E. J.

“…Pure iron and a series of iron-based Fe-Me alloys (with Me = Al, Si, Cr, Co, Ni, and Ge) were nitrided in a NH 3 /H 2 gas mixture at 923 K (650 °C). Different…”
Get full text

Molybdenum-Nitride Precipitation in Recrystallized and Cold-Rolled Fe-1 at. pct Mo Alloy by Selg, H., Bischoff, E., Meka, S. R., Schacherl, R. E., Waldenmaier, T., Mittemeijer, E. J.

“…Nitriding of recrystallized and cold-rolled Fe-1 at. pct Mo alloy at 853 K (580 °C) in a NH 3 /H 2 gas mixture leads to the formation of cubic nanometer-sized…”
Get full text

Nitride precipitation and coarsening in Fe–2.23 at.% V alloys: XRD and (HR)TEM study of coherent and incoherent diffraction effects caused by misfitting nitride precipitates in a ferrite matrix by Vives Díaz, N.E., Hosmani, S.S., Schacherl, R.E., Mittemeijer, E.J.

“…Specimens of Fe–2.23 at.% V alloy were nitrided in a NH 3/H 2 gas mixture at 580 °C. The nitrided microstructure was investigated by X-ray diffraction (XRD),…”
Get full text

Nitriding behavior of Fe–4wt%V and Fe–2wt%V alloys by Hosmani, S.S., Schacherl, R.E., Mittemeijer, E.J.

“…The nitriding behavior of Fe–4wt%V and Fe–2wt%V alloys was investigated by exposing these alloys to a gas mixture of ammonia and hydrogen at 580 °C. The…”
Get full text

Coherency strain and precipitation kinetics: crystalline and amorphous nitride formation in ternary Fe-Ti/Cr/V-Si alloys by Schwarz, B., Rossi, P.J., Straßberger, L., Jörg, F., Meka, S.R., Bischoff, E., Schacherl, R.E., Mittemeijer, E.J.

“…Specimens of iron-based binary Fe-Si alloy and ternary Fe-Me-Si alloys (with Me = Ti, Cr and V) were nitrided at 580 °C in a NH 3 /H 2 -gas mixture applying a…”
Get full text

Nitrogen absorption by Fe-1.04at.%Cr alloy: uptake of excess nitrogen by Hosmani, S. S, Schacherl, R. E, Mittemeijer, E. J

“…By dedicated pre-nitriding (at 580 °C in an ammonia/hydrogen gas atmosphere) and de-nitriding (at 470 °C in a hydrogen gas atmosphere) experiments, performed…”
Get full text

The nitriding kinetics of iron-chromium alloys; the role of excess nitrogen: Experiments and modelling by SCHACHERL, R. E, GRAAT, P. C. J, MITTEMEIJER, E. J

“…To investigate the morphology and the growth kinetics of nitrided layers of Fe-Cr alloys, nitriding experiments were performed for alloys with 4.3, 7.7, 14.0,…”
Get full text

The Kinetics of the Nitriding of Ternary Fe-2 at pct Cr-2 at pct Ti Alloy by Jung, K. S., Schacherl, R. E., Bischoff, E., Mittemeijer, E. J.

“…The mechanism and the kinetics of growth of the nitrided zone of ternary Fe-2 at pct Cr-2 at pct Ti alloy was investigated by performing gaseous nitriding…”
Get full text

Defect-dependent nitride surface layer development upon nitriding of Fe-1 at.% Mo alloy by Selg, H., Bischoff, E., Bernstein, I., Woehrle, T., Meka, S.R., Schacherl, R.E., Waldenmaier, T., Mittemeijer, E.J.

“…Upon nitriding of binary Fe-1 at.% Mo alloy in a NH 3 /H 2 gas mixture under conditions (thermodynamically) allowing γ′-Fe 4 N 1- x compound layer growth…”
Get full text

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…”
Get full text

Nitrogen uptake by an Fe–V alloy: Quantitative analysis of excess nitrogen by Hosmani, S.S., Schacherl, R.E., Mittemeijer, E.J.

“…Nitrogen absorption isotherms of Fe–2 wt.% V alloys were determined experimentally to study the differences in chemical bonding for various types of absorbed…”
Get full text

Kinetics of nitriding Fe-2 Wt Pct V alloy : Mobile and immobile excess nitrogen by HOSMANI, S. S, SCHACHERL, R. E, MITTEMEIJER, E. J

“…The kinetics of nitriding of Fe-2 wt pct V alloy was investigated as a function of time and temperature by exposing the alloy to a gas mixture of ammonia and…”
Get full text

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),…”
Get full text

Nitriding behaviour of maraging steel: experiments and modelling by Selg, H., Meka, S. R., Kachel, M., Schacherl, R. E., Waldenmaier, T., Mittemeijer, E. J.

“…The microstructure and the kinetics of growth of the nitrided zone of a Mo-containing maraging steel were investigated by performing gaseous nitriding at…”
Get full text

Microstructure and Kinetics of Nitride Precipitation in a Quaternary Iron-Based Model Fe-2.82 at. pct Cr-0.13 at. pct Mo-0.18 at. pct V Alloy by Kang, C. W., Meka, Sai Ramudu, Schacherl, R. E., Mittemeijer, E. J.

“…Internal nitride development in iron-based quaternary Fe-Cr-Mo-V alloy, as a model alloy for 31CrMoV9 steel, was investigated by performing controlled gaseous…”
Get full text

Nitriding of ferritic Fe–Cr–Al alloys by Jung, K.S., Schacherl, R.E., Bischoff, E., Mittemeijer, E.J.

“…Upon nitriding ferritic iron-based Fe–Cr–Al alloys (containing 0.25–1.25 at.% Cr and Al) a very hard surface layer develops containing nano-precipitates of…”
Get full text

Influence of the microstructure on the residual stresses of nitrided iron–chromium alloys by Díaz, N.E. Vives, Schacherl, R.E., Zagonel, L.F., Mittemeijer, E.J.

“…Different iron–chromium alloys (4, 8, 13 and 20 wt.%Cr) were nitrided in a NH 3/H 2 gas mixture at 580 °C for various times. The nitrided microstructure was…”
Get full text

Gaseous nitriding of iron-chromium alloys by SCHACHERL, R. E, GRAAT, P. C. J, MITTEMEIJER, E. J

“…Fe-Cr alloys containing 4, 7, 13 and 20 wt.% chromium were nitrided in a gas mixture consisting of hydrogen and ammonia at temperatures of 450, 580 and 700 deg…”
Get full text

Gaseous nitriding of iron-chromium alloys by Schacherl, R. E., Graat, P. C. J., Mittemeijer, E. J.

“…Fe –Cr alloys containing 4, 7, 13 and 20 wt.% chromium were nitrided in a gas mixture consisting of hydrogen and ammonia at temperatures of 450, 580 and 700…”
Get full text