Revealing the nucleation event of Mg-Al alloy induced by Fe impurity

Liao, Hengbin; Mo, Liling; Zhou, Xiong; Yuan, Zuoqiang; Du, Jie

doi:10.1007/s12613-021-2406-z

Cited by 7 publications

(2 citation statements)

References 23 publications

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“…The present works report a protocol for analyzing the detailed crystal structures of double intergrowth phases and investigating their orientation relationships of interfaces between intergrowth phases, which provide an alternative approach for such investigations besides advanced transmission electron microscopy (TEM) [6,7,20,21] and electron backscattered diffraction (EBSD) techniques [29,30] and will definitely stimulate further related jobs on intergrowth samples which frequently showing up in the complex metallic alloys.…”

Section: Discussionmentioning

confidence: 99%

“…Similar to the Al-Mn system, diverse complex intermetallics in the binary Al-Fe system have been discovered, including quasiperiodic and periodic quasi-crystalline approximate phases [1,2]. Among them, the Al 2 Fe and Al 5 Fe 2 phases have been extensively studied [3][4][5][6][7]. Studies on the crystal structure of the Al 2 Fe phase can be traced back to half a century ago.…”

Section: Introductionmentioning

confidence: 99%

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Orientation Relationship of Intergrowth Al2Fe and Al5Fe2 Intermetallics Determined by Single-Crystal X-ray Diffraction

Liu,

Fan,

Wen

et al. 2024

Metals

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Although the Al2Fe phase has similar decagonal-like atomic arrangements as that of the orthorhombic Al5Fe2 phase, no evidence for intergrowth samples of Al2Fe and Al5Fe2 has been reported. In the present work, the co-existence of Al2Fe and Al5Fe2 phases has been discovered from the educts obtained with a nominal atomic ratio of Al:Fe of 2:1 by arc melting. First, single-crystal X-ray diffraction (SXRD) as well as scanning electron microscope (SEM) equipped with energy-dispersive X-ray spectroscopy (EDX) measurements have been utilized to determine the exact crystal structures of both phases, which are refined to be Al12.48Fe6.52 and Al5.72Fe2, respectively. Second, the orientation relationship between Al2Fe and Al5Fe2 has been directly deduced from the SXRD data sets, and the co-existence structure model has been constructed. Finally, four pairs of parallel atomic planes and their unique orientation relations have been determined from the reconstructed reciprocal-space precession images of (0kl), (h0l), and (hk0) layers. In addition, one kind of interface atomic structure model is constructed by the orientation relations between two phases, correspondingly.

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