On the α–α′ miscibility gap of fe–cr alloys

Author: jlzw

August undefined, 2024

Web1 de dez. de 2008 · The Fe–Cr–Al alloy system has the potential to form an important class of enhanced accident-tolerant cladding materials in the nuclear power industry owing … WebThe miscibility gap of an Fe-Cr-Co system is further examined by monitoring the microstructures and the magnetic properties of the alloys. It is shown that the shape of …

On the α–α′ miscibility gap of Fe–Cr alloys Request PDF

Web1 de mai. de 2012 · The Cr threshold concentration is more precisely estimated to be 7.2 at.% at 325 °C and 8.3 at.% at 400 °C [3] while Bergener et al. [4] reported a solubility limit of Cr in a-Fe–Cr of 8.8 +/− 0.2 at.%, ignoring a possible asymmetry of the miscibility gap. WebIn general, FeCrAl alloys are faced with the separation of the high-chromium solid solution into α and α′ phases. For the Fe-25Cr-5Al-RE alloy, it is imperative to investigate the … greekcompany

Further studies of the miscibility gap in an Fe-Cr-Co permanent …

Web1 de jun. de 1989 · The α–α′ spinodal decomposition is known to occurr in iron–chromium-based model and industrial alloys during long-term aging at intermediate temperatures. Web2 de mar. de 2024 · Dislocation loop size, density and characteristics were determined using both two beam bright field transmission electron microscopy and on-zone scanning transmission electron microscopy techniques. 10Cr (C06M2) tube has a lower dislocation density, larger grain size and a slightly weaker texture compared to the 13Cr (C36M3) … Web1 de jun. de 2013 · Magnetism plays an important role in Fe–Cr alloys. The Fe-rich α phase is ferromagnetic (FM), and the Curie temperature decreases with increasing Cr content. … flow aim osu

On the α–α′ miscibility gap of Fe–Cr alloys Request PDF

The influence of short range order on the thermodynamics of Fe–Cr alloys

Web(1) Concentration of chromium in the Fe-rich phase ( α) of the Fe-Cr14 sample annealed at 415 oC is equal to 10.5 at% while that found in α after annealing at 450 oC is equal to … Web19 de fev. de 2024 · Uniaxial strain was applied to aging Fe–Cr alloys to study the morphological orientation and kinetics of the nanoscale α′ phase by utilizing phase-field simulation. The effects of applied uniaxial compressive and tensile strain on the two and three-dimensional morphology as well as on the separation kinetics of the … flow air giWebFe-Cr based alloys are considered as candidate structural materials in the design of next generation reactors. A good knowledge of the behavior under irradiation of these … flowair leo d

"Web1 de mar. de 2024 · In this study, four FeCrAl model alloys with 10–18 at.% Cr and 5.8–9.3 at.% Al were neutron-irradiated to nominal damage doses up to 7.0 displacements per atom at a target temperature of 320 °C. " - On the α–α′ miscibility gap of fe–cr alloys

On the α–α′ miscibility gap of fe–cr alloys

An Experimental Assessment of the α + α’ Miscibility Gap in Fe-Cr

WebOn the α–α′ miscibility gap of Fe–Cr alloys @article{Bonny2008OnT, title={On the $\alpha$–$\alpha$′ miscibility gap of Fe–Cr alloys}, author={Giovanni Bonny and … Web20 de nov. de 2015 · As per prevailing literature, Fe–15 wt.% Cr alloy in its equilibrium, belongs to the miscibility gap region of Fe–Cr phase diagram. In view of this, there is a possibility that this alloy may decompose into a two …

Did you know?

Web8 de mai. de 2024 · Table 1 shows the composition values of Fe, Cr, and Al in the α phase for the Fe-38 at.% Cr-10 at.% Al alloy aged at different times and temperatures. We define the equilibrium composition of the α phase with , where and denote the compositions at a time and at a long enough time, respectively. If the composition difference between the … Web(1) Concentration of chromium in the Fe-rich phase ( α) of the Fe-Cr14 sample annealed at 415 oC is equal to 10.5 at% while that found in α after annealing at 450 oC is equal to 13.3 at%. (2) For the He +-ions irradiated sample the Fe-rich border at 415oC is shifted by ~3 at% towards a higher Cr content i.e. the miscibilityt gap is narrower.

WebIn addition, post-irradiation annealing treatments at 500 and 600 °C were performed on a neutron-irradiated Fe-18 Cr alloy to validate the α-α′ phase boundary. The … WebMathon et al. 24 reported that α′ formation occurs in Fe-Cr model alloys at the temperatures as low as 250 °C under neutron irradiation when the concentration of Cr is larger than 8 …

Webinterest is the Fe-rich border of the miscibility gap i.e. the solubility limit of Cr in Fe matrix as its value is close to a minimum Cr content above which the Fe-Cr alloy becomes stainless. The present study was aimed at determining both Fe-rich and Cr-rich borders at … WebExperimental data on partial ordering and α′ precipitation in Fe–Cr alloys and ferritic steels containing up to 15at.% Cr are summarized. From this data and computer simulations employing the most advanced Fe–Cr cohesive models, the Fe-rich phase boundary of the α–α′ miscibility gap is constructed. This boundary is critically compared with the …

WebIn general, FeCrAl alloys are faced with the separation of the high-chromium solid solution into α and α′ phases. For the Fe-25Cr-5Al-RE alloy, it is imperative to investigate the structure and morphology and their effect on the alloy’s mechanical properties. In this paper, XRD is used to reveal the presence of α and α′ phases.

Web19 de mai. de 2024 · This paper presents the results of a Mössbauer spectroscopy investigation of the processes in the binary alloys Fe 100− c Cr c (c, at. % = 6.0, 9.4, 13.2) and of the short-range (SR) atomic ordering accelerated by applying warm severe plastic deformation via high pressure torsion (HPT).After warm HPT treatment, in the vicinity of … greek companies in romaniaWebOn the α–α′ miscibility gap of Fe–Cr alloys. Scripta Materialia, 2008. Dmitry Terentyev. Download Download PDF. Full PDF Package Download Full PDF Package. This Paper. A short summary of this paper. 37 Full PDFs related to this paper. Read Paper. flow aim mapsWeb20 de jan. de 2009 · Using atomistic simulations of Fe–Cr alloys and computational thermodynamics techniques, we study the influence of short range order (SRO) on the location of the α–α' miscibility gap. greek companies in americaWebA system of particular interest is the binary alloy system Fe-Cr, since it is both 15 an ideal model material and the base system for the stainless steel alloy category, suffering from low 16 temperature embrittlement due to phase separation. greek comoxWebAbstract: The miscibility gap of the α phase in Fe-Cr-Co permanent magnet alloys is constructed using mechanical hardness and Curie temperature measurements. It is … greek companies in usaWeb7 de fev. de 2024 · thermodynamics of Fe–Cr alloys G Bonny1, 23, P Erhart , A Caro ,RCPasianot4,5 6, L Malerba1 and M Caro2 1 SCK-CEN, Nuclear Materials Science Institute, Boeretang 200, B-2400 Mol, Belgium ... of the α–α miscibility gap. By comparing the random alloy with the short range ordered alloy, ... flowair leo l2Web1 de jun. de 2013 · The effects of Fe-rich (α) and Cr-enriched (α′) phase separation, occurring during aging at 475 °C on the microstructure and mechanical properties of … greek community tarpon springs