caa a22 4500 388022590 CHVBK 20180307124928.0 cr unu---uuuuu 161130e199805 xx s 000 0 eng 10.1557/JMR.1998.0168 doi S0884291400044046 pii (NATIONALLICENCE)cambridge-10.1557/JMR.1998.0168 Mechanical alloying studies in the Γ(Fe3Zn10) and Γ1(Fe5Zn21) single and mixed phase compositions [Elektronische Daten] Homogeneous or uniform crystalline materials are obtained following the ball milling of pure elemental powders of Fe and Zn in proportions to yield single phases Γ(Fe3Zn10), Γ1(Fe5Zn21), and Γ + Γ1 mixed phase (Fe25Zn75). Differential scanning calorimetry (DSC) measurements of the as-milled materials show characteristic stages in the temperature range of 50-600 °C prior to establishing stable equilibrium. The activation energies determined from kinetic analyses range from 49 to 189 kJ/mole in these materials. A characteristic stage at 130 °C marking the distinct evolution of the Γ and Γ1 phases from the intermediate or mixed phase composition is identified from XRD measurements. The identification of a unique Fe site with a quadrupole splitting (QS) of 1.5 mm/s in corroboration with x-ray diffraction (XRD) shows that this stage marks the onset of an in situ transformation prior to the distinct evolution of the homogeneous phases. The Mössbauer effect measurement of the as-milled materials are resolved in terms of four unique Fe sites with QS of 1.1, 0.241, 0.073, and 0.0772 mm/s. Copyright © Materials Research Society 1998 Jordan Aszetta Department of Materials Science and Engineering, University of Cincinnati, Cincinnati, Ohio 45221-0012 Liu Zhentong Department of Materials Science and Engineering, University of Cincinnati, Cincinnati, Ohio 45221-0012 Uwakweh Oswald N. C. Department of Materials Science and Engineering, University of Cincinnati, Cincinnati, Ohio 45221-0012 Journal of Materials Research Cambridge University Press 13/5(1998-05), 1177-1185 0884-2914 13:5<1177 1998 13 JMR https://doi.org/10.1557/JMR.1998.0168 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1557/JMR.1998.0168 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Jordan Aszetta Department of Materials Science and Engineering, University of Cincinnati, Cincinnati, Ohio 45221-0012 NATIONALLICENCE 700 1- Liu Zhentong Department of Materials Science and Engineering, University of Cincinnati, Cincinnati, Ohio 45221-0012 NATIONALLICENCE 700 1- Uwakweh Oswald N. C. Department of Materials Science and Engineering, University of Cincinnati, Cincinnati, Ohio 45221-0012 NATIONALLICENCE 773 0- Journal of Materials Research Cambridge University Press 13/5(1998-05), 1177-1185 0884-2914 13:5<1177 1998 13 JMR CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge