Study of the local environment during the phase decomposition of Fe–30.8Cr–12.2Co alloy by Mössbauer spectrometry

M�ssbauer Study of Mechanically Alloyed Fe57Cr31Co12

“…These environments can be considered as pseudo-binary alloys: Cr-rich (Fe,Co)-Cr, Ferich (Fe,Co)-Cr and Co-rich (Fe,Cr)-Co, respectively. These results are similar to those obtained on the same alloy prepared by conventional melting technique and aged for 1080 ks at 873 K [3]. Conclusion Structural analyses have been made on ternary alloy Fe 57 Cr 31 Co 12 produced by high energy ball milling.…”

“…The hyperfine structure is strongly dependent on milling time with a progressive asymmetrical broadening of the sextet lines and the emergence of a single line at the center of the spectrum. The Mö ssbauer spectra have been analysed using the fitting procedure, developed by Alleg et al [3], and previously applied to spectra obtained on analogous melt alloys. After 1 h of milling, the spectrum shows the presence of a sextet having an hyperfine field of about H = 32.8 T, slightly smaller than that of the unmilled bcc-Fe.…”

Study of alloying mechanisms of ball milled Fe–Cr and Fe–Cr–Co powders

“…The milling was interrupted for 30 min every hour in order to dissipate the thermal energy and to reduce the increase of temperature. The investigation methods were X-ray diffraction (XRD) and 57 Fe Mo¨ssbauer spectrometry. The XRD patterns were performed with Cu-Ka radiation (l ¼ 1:54056 ( A).…”

Phase Transformation and Properties of Fe-Cr-Co Alloys with Low Cobalt Content

“…6,7) As shown in previous investigations, 4,8) the addition of Co in Fe-Cr-Co alloys can raise the decomposition temperature of ¡ phase, and also extend the difference in concentrations between ¡ 1 and ¡ 2 phase. The magnetic properties of Fe-CrCo alloys are mainly affected by the addition of Co with the usual content being about 20 mass%, or above 10 mass% at least.…”