ICAMS / Interdisciplinary Centre for Advanced Materials Simulation
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Experimental investigation and thermodynamic calcualtion of the Fe-Mg-Mn and Fe-Mg-Ni systems

P. Wang, J. Zhao, Y. Du, H. Xu, T. Gang, J. Fen, L. Zhang, C. He, S. Liu, H. Ouyang.

International Journal of Materials Research, Carl Hanser Verlag GmbH & Co. KG, 102, 6-16, (2011)

Abstract
Based on the thermodynamic calculations extrapolated from the corresponding binary sub-systems, four decisive alloys in the Fe-Mg-Mn system and three in the Fe-Mg-Ni system were selected and prepared using a power metallurgy method to measure the isothermal sections at 500°C in both systems. The prepared samples were annealed at 500°C, and then subjected to X-ray diffractions, optical microscopy, scanning electron microscopy with energy-dispersive X-ray spectrometry as well as electron probe microanalysis. Taking into account the presently obtained experimental data and the experimental data available in the literature, thermodynamic modeling was performed for the corresponding three binary systems can well reproduce all the experimental data in the Fe-Mg-Mn system, while two thermodynamic parameters are needed in the Fe-Mg-Ni system to fit all the experimental data. The liquidus projections and reaction schemes for the Fe-Mg-Mn and Fe-Mg-Ni systems are also presented.


Keyword(s): fe-mg-mn and fe-mg-ni phase doagrams; thermodynamic calcualtion; x-ray diffraction; scanning electron microscopy with energy-dispersive x-ray analysis; electron probe microanalysis
DOI: 10.3139/146.110442
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