Phase transformation during mechano-synthesis of nanocrystalline/amorphous Fe-32Mn-6Si alloys
Okyay, A. K.
Amini, R., Shamsipoor, A., Ghaffari, M., Alizadeh, M., & Okyay, A. K. (2013). Phase transformation during mechano-synthesis of nanocrystalline/amorphous Fe–32Mn–6Si alloys. Materials Characterization, 84, 169-174.
Please cite this item using this persistent URLhttp://hdl.handle.net/11693/12896
Mechano-synthesis of Fe-32Mn-6Si alloy by mechanical alloying of the elemental powder mixtures was evaluated by running the ball milling process under an inert argon gas atmosphere. In order to characterize the as-milled powders, powder sampling was performed at predetermined intervals from 0.5 to 192 h. X-ray florescence analyzer, X-ray diffraction, scanning electron microscope, and high resolution transmission electron microscope were utilized to investigate the chemical composition, structural evolution, morphological changes, and microstructure of the as-milled powders, respectively. According to the results, the nanocrystalline Fe-Mn-Si alloys were completely synthesized after 48 h of milling. Moreover, the formation of a considerable amount of amorphous phase during the milling process was indicated by quantitative X-ray diffraction analysis as well as high resolution transmission electron microscopy image and its selected area diffraction pattern. It was found that the α-to-γ and subsequently the amorphous-to-crystalline (especially martensite) phase transformation occurred by milling development. © 2013 Elsevier Inc.