Phase separation and coarsening in FeCrCo alloys
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Spinodal decomposition coupled with a continuous crystal ordering in a titanium alloy
2022, Acta MaterialiaCitation Excerpt :It should be noted that the factor n of 1/5 is different from that of other decomposition alloys. The previous investigations have revealed that the factor n is dependent on the modulated microstructure: the plate-like microstructure has a typical n of 1/3 but the spongy-like microstructure has a much lower n ranged from 0.03 to 0.14 in general [8,21,22]. This suggests that, although the aged alloy has a plate-like microstructure, the continuously-increased mismatching strain favors a decrease of the time factor n. Additionally, the activation energy Q of 209±21 kJ/mol can be obtained by Eq. (4).
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2022, Advances in Metal Additive ManufacturingMicrostructural stability and intermetallic embrittlement in high Al containing FeCrAl-ODS alloys
2021, Materials Science and Engineering: ACitation Excerpt :Most of these steels suffer from 475°C (748 K) ageing embrittlement due to the phase separation of the α−(Fe,Cr)ferrite phase into Fe-rich α−ferrite and Cr-rich α’−ferrite phases within the low-temperature miscibility gap in Fe–Cr system. Many researchers have studied the effect of alloying additions on the α′ phase separation using various techniques [36–39] and concluded that it is almost impossible to supress the phase separation in ferritic steels. Capdevila et al. [22] were the first to show that Al preferentially partitions into the Fe-rich α−phase rather than Cr-rich α’−phase in Fe–20%Cr–6%Al ODS alloy.
Early Developments and Basic Concepts
2016, Atom Probe Tomography: Put Theory Into PracticeEffect of Al/Ni ratio, heat treatment on phase transformations and microstructure of Al<inf>x</inf>FeCoCrNi<inf>2-x</inf> (x=0.3, 1) high entropy alloys
2015, Materials and DesignCitation Excerpt :Moreover, Cobalt, due to its mutual chemical compatibility with both binaries of Ni-Al and Fe-Cr, disperses itself almost evenly throughout these two systems. Therefore once the temperature was within the spinodal range, the Fe-Cr-Co or Al-Ni-Co regions have undergone a spinodal type decomposition from a ternary system to form individual solid solutions [34,35]. Singh et al. and Mazoni et al. have found similar kind of Fe-Cr and Al-Ni rich alternating modulation during the decomposition of the AlFeCuCoCrNi and AlFeCoCrNi systems respectively.
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Present address: University of Pittsburgh, Pittsburgh, PA 15261, U.S.A.
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Present address: Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.