Publication Details

Kral, M. V., Nakashima, P. N H. and Mitchell, D. RG. (2006). Electron microscope studies of Al-Fe-Si intermetallics in an A1-11 percent alloy. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 37 (6), 1987-1997.


Al-Fe-Si intermetallic particles in both unmodified and highly modified sand-cast eutectic AI-11.7 pct Si alloys were characterized using scanning and transmission electron microscopy, energy-dispersive X-ray spectroscopy, and convergent beam and selected area electron diffraction. The only two Al-Fe-Si intermetallics observed in this particular alloy are (1) ‘‘Chinese-script’’ morphology, consistent with a description of body-centered cubic a-A119Fe4MNSi2 and (2) plate-shaped, consistent with tetragonal d-A1eFeSi2. The authors are unaware of any other characterization of d-A1eFeSi2 using convergent beam electron diffraction (CBED) and selected area diffraction (SAD) techniques.