抄録
Mechanical alloying (MA) and mechanical grinding (MG) have been performed for Fe86C14 powders by a conventional ball-mill. MA has been carried out on a mixture of elemental iron and graphite powders and MG on a pre-alloyed iron-cementite powder. Ball-milled powders have been examined by scanning electron microscopy, transmission electron microscopy, X-ray diffractometry, 57Fe Mössbauer spectroscopy and differential scanning calorimetry. Super-saturated solid solution of α-iron has been formed by a cold-welding of the pulverized iron particles on the MA process. By subsequent milling and/or heating, carbide has been formed from the solid solution. While, ultra-fine structure with capital size of few nano-meter has been formed for MG powder of the white cast iron. Amorphous phase has been formed by both MA and MG.
