Icosahedral phase in rapidly solidified Al–Fe–Ce alloy

Zhang, Chuanjiang; Wu, Youshi; Cai, Xueling; Fang, Zhao; Zheng, Shuqi; Zhou, Guorong; Wu, Si

doi:10.1016/s0921-5093(01)01353-3

Cited by 17 publications

(8 citation statements)

References 19 publications

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“…The intermetallic phases Al 13 Cr 2 and Al 20 CeCr 2 and a small amount of Al 80 (Cr,Fe) 20 quasicrystalline phase were identified. It was shown that Al-Fe interaction in melt is very strong and leads to the formation of Al-Fe quasicrystals [18,19]. Presence of the quasicrystalline phase has beneficial influence because it suppresses grain growth at elevated temperatures [20].…”

Section: Methodsmentioning

confidence: 99%

Microstructure characterization of rapidly solidified Al–Fe–Cr–Ce alloy by positron annihilation spectroscopy

Michalcová

Vojtěch

Čı́žek

et al. 2011

Journal of Alloys and Compounds

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Section: Methodsmentioning

confidence: 99%

Microstructure characterization of rapidly solidified Al–Fe–Cr–Ce alloy by positron annihilation spectroscopy

Michalcová

Vojtěch

Čı́žek

et al. 2011

Journal of Alloys and Compounds

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“…However, the diffraction intensity is also very low. Moreover, Wu et al [19,20] reported that there was an obvious pre--peak in a smaller angle region of X-ray diffraction curve for Al-based amorphous structure. The intensive chemical short-range order in Al substrate might result in the pre-peak [21].…”

Section: X-ray Diffraction Analysismentioning

confidence: 99%

Amorphization of Al-Cu-Mg alloys by friction stir welding

Feng¹,

Liu²,

Xia³

et al. 2017

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The microstructure and phase constituents in stir zone of friction stir weld for 2024-T4 aluminium alloys were observed and analysed by transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) and X-ray diffraction analysis. Homogeneous amorphous structure in some area of the weld nugget zone was detected. The amorphous structure with halo pattern has a structure characteristic of the long-range disorder. X-ray diffraction analysis indicated that a diffuse scattering peak in the shape of steamed bun with amorphous characteristic exists in the degree scope of 15 • -29 • . Some influencing factors, such as higher temperature gradient, hydrostatic pressure and shear stress and strain, may induce the formation of amorphous structure in weld nugget zone of friction stir weld. K e y w o r d s : friction stir welding, amorphous structure, transmission electron microscopy, X-ray diffraction, microstructure

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“…A typical alloy from this group is Al-2.5Cr-3Fe-2.5Ti [2,3]. It was shown that the ability of TMs to thermally stabilize the alloys depends on their solid solubilities in Al matrix [4]. Maximum solubility of Fe is very low (0.06 wt.% [5]), but solubilities of Cr and Ti are significantly higher (0.67 wt.% and 1.24 wt.% [5], respectively).…”

Section: Introductionmentioning

confidence: 99%

“…This alloy contains a slightly higher Fe content than the previous one. Zhang et al have shown that Al-Fe interaction is very strong and that it leads to the formation of Al-Fe quasicrystals [4]. The presence of quasicrystalline phases retards Al grain growth at elevated temperatures [8].…”

Section: Introductionmentioning

confidence: 99%

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Influence of cooling rate and cerium addition on rapidly solidified Al-TM alloys

Michalcová¹,

Vojtěch²,

Schumacher³

et al. 2010

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Rapidly solidified alloys, based on an aluminium-transition metal (TM) system, are promising structural materials. They show good mechanical properties and excellent thermal stability, which is caused by the very fine nanostructure of these materials and by the presence of nonequilibrium intermetallic phases. Influence of the cooling rate and Ce addition on properties of Al-5.5Ce-3Fe-1.5Ti alloy that was prepared by the melt spinning method was studied in this work. It was shown that formation of the quasicrystalline phase depends on the cooling rate during melt spinning. The addition of a few weight percents of Ce modifies phase composition of the alloy and stabilizes quasicrystals at elevated temperatures. However, the influence of Ce addition on hardness was not observed.

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Icosahedral phase in rapidly solidified Al–Fe–Ce alloy

Cited by 17 publications

References 19 publications

Microstructure characterization of rapidly solidified Al–Fe–Cr–Ce alloy by positron annihilation spectroscopy

Microstructure characterization of rapidly solidified Al–Fe–Cr–Ce alloy by positron annihilation spectroscopy

Amorphization of Al-Cu-Mg alloys by friction stir welding

Influence of cooling rate and cerium addition on rapidly solidified Al-TM alloys

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