Liquidus, solidus and reaction scheme of the Al-rich part of Al–Cr–Mn

Balanetskyy, S.; Kowalski, W.; Grushko, B.

doi:10.1016/j.jallcom.2008.06.126

Cited by 13 publications

(2 citation statements)

References 6 publications

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“…Concerning the respective field (p 11 U 7 U 8 e 6 ) for the θ phase, it hardly reaches 1 at.% Fe, decreasing toward the aluminum corner in the ternary system. This has been established through a comparison of the liquidus temperatures of ternary alloys, based on which the temperatures of four-phase invariant equilibria have been established and correspond to the invariant points U 4 (1035°C), U 5 (985°C), and U 7 (750°C) ( Table 1), and the liquidus curves and temperatures of invariant equilibria in the binary Al-Cr system, according to our version of the phase diagram [7][8][9]. μ phases at 980 and 985°C, takes part in the invariant reaction L + μ ⇔ η, whose temperature is 865°C, in the ternary system.…”

Section: Resultsmentioning

confidence: 99%

The Al–Cr–Fe phase diagram. II. Liquidus surface and phase equilibria for crystallization of 58–100 at.% Al alloys

Khoruzha

Kornienko

Pavlyuchkov

et al. 2011

Powder Metall Met Ceram

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UDC 669.715′26′11Data on the solidus surface of the Al-Cr-Fe system in the range 58-100 at.% Al and on the cast alloys examined with metallography, x-ray diffraction, and differential thermal and electron microprobe analyses are used to construct the liquidus surface of this system on the concentration triangle and study the processes that occur during crystallization of its alloys. This has permitted the construction of the Al-Cr-Fe melting diagram in the range 58-100 at.% Al. The liquidus surface includes primary crystallization fields of four ternary compounds, eight solid solutions based on binary phases, and a solid solution based on aluminum. There are fourteen four-phase invariant equilibria involving a liquid phase (three eutectic, two peritectic, and nine transition equilibria) and eight three-phase invariant equilibria involving a liquid phase.

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Section: Resultsmentioning

confidence: 99%

The Al–Cr–Fe phase diagram. II. Liquidus surface and phase equilibria for crystallization of 58–100 at.% Al alloys

Khoruzha

Kornienko

Pavlyuchkov

et al. 2011

Powder Metall Met Ceram

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“…(d), (e) and (f), respectively, implying the complex SADP of Fig. 9(c) is a combination of three SADPs, their twin plane is {1 � 11}, too.According to Al-Cr binary phase diagram[13][14] and Al-Cr-Mn phase diagram[12,[20][21][22], there are a few eutectic reactions occurring during temperature of 560℃~1200℃, suggesting that many second phases are mostly formed during solidification, thermo-mechanical treatment, and/or in the course of annealing. On solidification, particles with hundreds or thousands of nanometers crystallize from the liquid in eutectic or pseudo-peritectic reactions.…”

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confidence: 99%

Morphology of Dispersoids in an Annealed Al-Mg Alloys

Xiao

Liu

Chen

et al. 2021

MSF

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Morphology of dispersoids in an annealed Al-Mg alloy were investigated using TEM. Five kinds of dispersoids with different structures and morphologies were observed in an annealed Al-Mg alloy. The 1st, or spherical-like one is monoclinic structured θ-Al45(Mn,Cr)7 phase with twin and orientation domain. The 2nd or plate-shaped one is η-Al5(Mn,Cr) phase with monoclinic or pesuo-tetragonal structure. The 3rd or prismatic-like one is a new hexagonal structured Al6.4Mn phase with a unit cell of a=1.72nm, c=1.27nm, and γ=120°, and the 4th or big rod-shaped one is orthorhombic structured Al6(Mn,Fe) phase which is often reported. The 5th one is E-Al18Mg3(Mn–Cr)2 phase with twin or triple twin observed occasionally in Al-Mg annealed alloy. The first two of dispersoids are in majority, followed by the middle two and a small number of the fifth. Formation mechanisms of these particles in Al-Mg alloy are discussed according to phase diagram and possible formation of the twins in the particles are described based on minimum energy.

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