Structural Evolution of FeAl₃ Intermetallic during High-Energy Ball-Milling

Abstract:

In this work, we reported the results obtained by the structural characterization of the FeAl₃ intermetallic compound. This material was synthesized by conventional casting technique using Fe (99.97%) and Al (99.92%) elemental metals. Then, the as-cast alloy was subjected to high-energy ball-milling for different times (1, 2.5, 5, 7.5, 10 and 15 h). The characterization of the alloy was performed by X-ray diffraction patterns, scanning and transmission electron microscopy. The results show that FeAl₃ intermetallic was produced as a single-phase after conventional casting. The milled experiments show that the FeAl₃ (monoclinic) transforms to Fe₂Al₅ (orthorhombic) after 15h of milling. Therefore, this phase transformation is characterized by a change from low to high symmetry systems.

• Periodical: Materials Science Forum (Volume 755)
• Pages: 133-138
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.755.133
• Online since: April 2013
• Authors: J. Luis López-Miranda, J.R. Romero-Romero, Rodrigo Alonso Esparza Muñoz, G. Rosas
• Keywords: Ball-milling, Intermetallic Compound, Phase Transition

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