Aluminium based alloys with transition metals
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Non equilibrium crystallization of Aluminium based alloys with transition metals. The solidification of Al-rich Al-Mn alloys (3.5 %, 4 % & 4.5 % wt) and Al-rich Al-Cu-Mn system has been studied both experimentally and by calculation of the phase equilibria using ThermoCalc software. For Al-Mn system, the results of the previous studies which indicated that one or more stable intermetallic phases get suppressed on solidification from the liquid, have been confirmed. Al-Mn-Cu ternary system in the aluminium rich region is experimentally investigated in as-cast state. Phase relations and solubili...
Non equilibrium crystallization of Aluminium based alloys with transition metals. The solidification of Al-rich Al-Mn alloys (3.5 %, 4 % & 4.5 % wt) and Al-rich Al-Cu-Mn system has been studied both experimentally and by calculation of the phase equilibria using ThermoCalc software. For Al-Mn system, the results of the previous studies which indicated that one or more stable intermetallic phases get suppressed on solidification from the liquid, have been confirmed. Al-Mn-Cu ternary system in the aluminium rich region is experimentally investigated in as-cast state. Phase relations and solubility limits have been determined for the binary and ternary compounds using SEM/EDS, EPMA and XRD techniques. The ternary compound 1 has been found in the Al-Cu-Mn system, the compositions and it's homogeneity ranges has also been determined. This phase forms not only by U4 or U7 type reactions but also by ternary eutectic E2 type reaction in Al-rich region. The composition of 1 has an averagecomposition of Al20Mn3Cu2/ Mn6Cu4Al29. It is much better to consider a general composition of Mn6+xCu4+yAl29-x-y.
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