Structural transformations of Fe81B13Si4C2 amorphous alloy induced by heating

Influence of Microstructure on Microhardness of Fe81Si4B13C2 Amorphous Alloy after Thermal Treatment

“…The as-prepared alloy already had a degree of crystallinity caused by the presence of a-Fe phase (JCPDS-PDF 06-0696), which corresponds to less than 5 pct mass of the samples. [24] In addition to a sharp crystalline peak at 66 deg in the XRD spectra of the asprepared alloy, a broad spread halo around 45 deg, corresponding to domains of short-range ordering in the sample, was also observed. The position of the spread halo corresponds to the approximate position of the Fe 3 Si peak, and, using the Scherrer equation, we estimated the size of these domains to be 1 to 1.5 nm.…”

“…[16,17] The Fe 81 Si 4 B 13 C 2 amorphous alloy was investigated to a significant degree [18][19][20][21] with respect to phase transformations and kinetics of crystallization [22,23] and the effect of these transformations on magnetic and electric properties. [24] However, the mechanical properties of this alloy and the influence of thermally induced structural transformations on these properties were not previously studied in detail. As a part of a multidisciplinary study of thermally induced structural transformations of iron-based amorphous alloys and their correlations with the properties of these alloys, we have been investigating the correlations between thermally induced structural transformations of Fe 81 Si 4 B 13 C 2 amorphous alloy and its mechanical properties, specifically, microhardness.…”

Thermal Stability and Phase Transformations of Multicomponent Iron-Based Amorphous Alloys

“…Iron-based amorphous alloys studied herein were prepared in the form of the 30-35 μm thin ribbons by melt-quenching technique [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30]. The nominal composition of the as-prepared alloy samples can be represented as follows in atomic %: Fe 81 Si 4 X-ray diffraction (XRD) measurements were performed in Bragg-Brentano geometry, using a Co K α radiation source, at room temperature.…”

“…In order to obtain detailed information on microstructure of the as-prepared alloys and the nature of individual crystallization steps, the XRD and Mössbauer spectroscopy methods were applied [15,20,25,28,30]. The XRD results revealed that the microstructure of the as-prepared alloys is characterized by short-range atomic ordering showing characteristic broad diffraction halo maxima.…”

Magnetism and Microstructure Characterization of Phase Transitions in a Steel

“…When compared with each other, austenite phase is nonmagnetic while ferrite, pearlite, and bainite phases are magnetic. Noteworthy to mention here, Mössbauer spectroscopy is an accurate spectroscopic technique, which clarifies the internal magnetism ( int ) and volume fractions of distinct phases in steel and alloys [12][13][14].…”