Abstract
For the injection molded FeAl intermatallic compounds (Fe-45Al and Fe-48A (at.%)), 0.5 at.% boron (B) powder was added to FeAl powders in order to improve the mechnical properties of sintered compacts, and the tensile properties were examined in air at room temperature, 400°C and 600°C. The results obtained were summerized as follows: (1) Boron acted as sintering aids, so its addition contributed to decreasing the sintering temperature of FeAl. (2) At room temperature, the sintered Fe-45Al compact showed a little changes on the tensile properties by boron addition. On the other hand, the elongation of sintered Fe-48Al compact was improved to 1.0% to 0.3% by boron addition. (3) At high temperature, especially at 600°C, boron addition was effective for the improvement of both 0.2% proof stress and tensile strength of sintered compacts.
