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We have measured aluminum-like medium range order (MRO) in amorphous Al 92 Sm 8 using fluctuation electron microscopy (FEM). Here we show similar but not identical medium-range structure in amorphous Al 88 Y 7 Fe 5 . Both compositions begin to crystallize in less than 7min under a 120kV TEM electron beam. Beam-induced heating of these samples is minimal, so...
Some micrometric spherical particles containing several b.c.c. grains are obtained from an initially amorphous Ti 50 Ni 25 Cu 25 melt-spun ribbon after a controlled thermal treatment. The microstructure and crystallography of these crystalline particles have been investigated by TEM, showing that each of the grains grows to the same distance from the center of...
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