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

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Web25 de mar. de 2024 · In this study, Fe18wt.%Cr alloy in solid solution state and pre-aged to produce relatively coarse CrRP was irradiated with 8 MeV Fe ions. The irradiation conditions involved two midrange doses of 0.37 and 3.7 displacements per atom (dpa), a wide range of dose rates (10-5–10-3 dpa/s) and temperatures (300–450 °C). Web12 de abr. de 2024 · Ti and its alloys are the second largely investigated material after Fe-based alloys due to their diverse applications in the biomedical (medical) and aerospace …

On the α–α′ miscibility gap of Fe–Cr alloys - Academia.edu

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 … Web17 de dez. de 2012 · Simulations of short-range ordering and α − α ′ decomposition are performed at 773 and 813 K for Cr concentrations between 10 % and 50 %. They are … list of managed care companies

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

Web1 de mai. de 1976 · The coherent phase diagram of the Fe-Al system possesses a tricritical point where a line of higher-order transitions ends at a miscibility gap at about 23 at.% … WebActa Metall Sin, 2014, 50 (5): 515-523. DOI: 10.3724/SP.J.1037.2013.00623. Si-containing transformation induced plasticity (TRIP) steel is noted for good balance of excellent formability and high strength as the advanced high strength steel (AHSS). The advantage of this steel can be attributed to the TRIP effect, which is the transformation of ... WebINIS Repository Search provides online access to one of the world's largest collections on the peaceful uses of nuclear science and technology. The International Nuclear Information System is operated by the IAEA in collaboration with over 150 members. list of mana games

Quantitative Phase-Field Simulation of Composition Partition and ...

The effect of Al on the 475 °C embrittlement of Fe–Cr alloys

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 … WebThe phase diagrams of binary alloys are known to vary with pressure. Within the framework of solution-type models, the variation is controlled by the pressure dependence of the elemental end members, which is relatively well known, and that of the excess interaction, which is unknown. imdb good will huntingWebmost symmetrical α-α′ miscibility gap and yield a zero solubility limit of Cr in Fe at low temperature. How-ever, ﬁrst principles calculations by Hennion13 in 1983, conﬁrmed a few years later by a neutron study of short range order (SRO)14,15 have shown that Fe-Cr alloys dis-play an ordering tendency for low chromium contents. imdb gone are the days

"Web1 de abr. de 2024 · The addition of Tb increases the saturation magnetostriction in the Fe-19Ga-xTb and Fe-27.4Ga-xTb alloys (up to ≈235 ppm for the Fe-19Ga-0.37 Tb and ≈240 ppm for the Fe-27.4Ga-0.3 Tb samples). " - On the α–α′ miscibility gap of fe–cr alloys

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

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

Web7 de out. de 2024 · Typically, Generation II alloys have Cr contents between 10 and 13 wt% and Al contents between 5 and 6 wt%. The lean-alloy composition space was selected … 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 …

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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. Web28 de mar. de 2016 · The separation of a Cr-enriched nanometer-scale α′ phase can induce the embrittlement of Fe-Cr alloys at high temperature, and the separation kinetics of the α′ phase determines its spatial morphology. The quantitative kinetics of the α′ phase formed by spinodal decomposition was studied in a Fe-42 at.% Cr alloy by phase-field simulation at …

WebCr 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 … Web1 de jan. de 2008 · Experimental data on partial ordering and alpha-prime precipitation in Fe–Cr alloys and ferritic steels containing up to 15 at.% Cr are summarized. From this …

WebThe Effect of Bi and Zn Additives on Sn-Ag-Cu Lead-Free Solder Alloys for Ag Reduction. Journals. Active Journals Find a Journal Proceedings Series. Topics. Information. For Authors For Reviewers For Editors For Librarians For Publishers For Societies For Conference Organizers. 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.

Web1 de mai. de 1976 · The coherent phase diagram of the Fe-Al system possesses a tricritical point where a line of higher-order transitions ends at a miscibility gap at about 23 at.% …

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 … imdb great coastal railway journeysWeb1 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. imdb goth bioWeb21 de fev. de 2024 · In terms of assessing the α + α’miscibility gap some of the more well-known experimental studies have been made by Miller et al. , Kuwano and Williams … imdb good will hunting triviaWebOn 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 … imdb go party in montrealWeb1 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. … imdb good will hunting castWeb12 de abr. de 2014 · There is considerable uncertainty among diverse assessments of phase equilibrium in Fe-Cr alloys, especially around (α′ + α″)/α miscibility gap region.This is largely due to the difficulty associated with the rigorous incorporation of the interplay between magnetic and chemical contribution to phase stability, in particular its … imdb got castWeb14 de jul. de 2015 · In this study, a series of Fe Cr Al alloys with 10 18 wt % Cr and 2.9 4.9 wt % Al were neutron irradiated at 382 C to 1.8 dpa to investigate the irradiation-induced microstructural and mechanical property evolution as a function of alloy composition. Dislocation loops with Burgers vector of a/2 111 and a 100 were detected and quantified. list of management consulting firms in mumbai