Phase Stability in Mechanically Alloyed Mn-30at.%Al | ||||
Egyptian Journal of Solids | ||||
Article 11, Volume 28, Issue 2, December 2005, Page 315-323 PDF (343.36 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/ejs.2005.149331 | ||||
View on SCiNiTO | ||||
Abstract | ||||
Mechanical alloying of Mn-30at. % Al powder mixture resulted in the formation of an α-Mn solid solution in the early stage of milling with the subsequent formation of β-Mn phase after 30h milling. Thermal treatment at 10600 C, confirmed the recently extension of the high temperature ε-phase. However, the presence of impurity atoms, mainly iron, impeded the expected ε→β transformation during quenching. Such transformation is obtained by annealing the metastable ε-phase at 4000 C and was found to be time dependent. Magnetic properties assessments of both as milled and annealed alloy are carried out. | ||||
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