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The Formation Mechanism of a Self-Organized Periodic-Layered Structure at the Solid-(Cr, Fe)2B/Liquid-Al Interface
- Source :
- Materials, Materials, Vol 13, Iss 3869, p 3869 (2020), Volume 13, Issue 17
- Publication Year :
- 2020
- Publisher :
- MDPI, 2020.
-
Abstract
- A periodic-layered structure was observed in solid-(Cr, Fe)2B/liquid-Al diffusion couple at 750 &deg<br />C. The interface morphology, the reaction products, and the potential formation mechanism of this periodic-layered structure were investigated using an electron probe microanalyzer (EPMA), scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), transmission electron microscopy (TEM), and energy-dispersive spectroscopy (EDS). The results indicate that the reaction between (Cr, Fe)2B and liquid Al is a diffusion-controlled process. The formation of intermetallics involves both the superficial dissolution of Fe and Cr atoms and the inward diffusion of Al at the interface. The layered structure, as characterized by various experimental techniques, is alternated by a single FeAl3 layer and a (FeAl3 + Cr3AlB4) dual-phase layer. A potential mechanism describing the formation process of this periodic-layered structure was proposed based on the diffusion kinetics based on the experimental results.
- Subjects :
- focused ion beam
Materials science
Scanning electron microscope
Diffusion
Analytical chemistry
Intermetallic
Electron microprobe
Focused ion beam
lcsh:Technology
Article
periodic-layered structure
General Materials Science
phase transformations
lcsh:Microscopy
Dissolution
lcsh:QC120-168.85
lcsh:QH201-278.5
lcsh:T
interface diffusion
self-assembly
Transmission electron microscopy
lcsh:TA1-2040
lcsh:Descriptive and experimental mechanics
lcsh:Electrical engineering. Electronics. Nuclear engineering
lcsh:Engineering (General). Civil engineering (General)
lcsh:TK1-9971
Electron backscatter diffraction
Subjects
Details
- Language :
- English
- ISSN :
- 19961944
- Volume :
- 13
- Issue :
- 17
- Database :
- OpenAIRE
- Journal :
- Materials
- Accession number :
- edsair.doi.dedup.....1edb4a5b3a77728d6e697b81f493672c