951 MA-加圧焼結法を用いた FeAl 基 ODS 合金の特性

概要

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Water atomized Fe powder, containing excessive oxygen, was mechanically alloyed (MA) with Al powder at the composition of Fe-40mol%Al. Al can act as a metallic reducing agent for iron oxide of water atomized Fe powder during PM process. In addition, reduced Fe powder was used to compare with the case of water atomized Fe powder. After long time milling, B2 type FeAl intermetallic phase forms along with elemental phases only by MA. Vacuum hot pressed compacts showed almost 100% FeAl intermetallic compound. Compact, made from the water atomized Fe powder, showed lower relative density (97.5%) and higher hardness compared to the case of reduced Fe powder and previously reported experimental data. This seems to be causes of the fine microstructure of the compact and effect of dispersed Al_2O_3 particle.
一般社団法人日本機械学会の論文
2002-09-20