TY - JOUR ID - 4661 TI - Production of Fe-C Powders with Improved Structure JO - International Journal of Iron & Steel Society of Iran JA - IJISSI LA - en SN - 2981-0388 AU - Enayati, M. H AU - Zakeri, M AD - Department of Materials Engineering, Isfahan University of Technology, Isfahan, 84156, Iran Y1 - 2004 PY - 2004 VL - 1 IS - 1 SP - 24 EP - 28 KW - Powder preparation KW - Fe-C KW - Mechanical alloying KW - Nanomaterials DO - N2 - Production of Fe-C alloy powders by mechanical alloying was studied. Fe and graphite elemental powder mixtures containing 0.8 and 1.5wt.% graphite were mechanically alloyed using a planetary ball mill. The structural changes of powder particles during mechanical alloying were studied by x-ray diffractometery, scanning electron microscopy and microhardness measurements. For both compositions, mechanical alloying for 30h resulted in the development of a nanocrystalline structure with a typical grain size of 16nm containing nanoscale size Fe3C phase. This structure exhibited high microhardness value of the order of 600Hv. The powder particles after 30h of milling had a nearly spherical morphology and narrow size distribution. The mean powder particle size for Fe-0.8wt.% graphite composition was 15μm, whereas the Fe-1.5wt.% graphite composition achieved a smaller particle size with a mean of 9μm due to higher graphite content. UR - https://journal.issiran.com/article_4661.html L1 - https://journal.issiran.com/article_4661_72519f9c2ecb415c86f1e6f4e6cf31ab.pdf ER -