メカニカルアロイングによるFe-40at%Al+WC粉の合成とその成形体の機械的特性

概要

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Elemental powders of iron, aluminum and tungsten carbide powders has been used as starting materials for mechanical alloying and mixed to give the desired composition of Fe-40at%Al+50, 65vol%WC. The powder mixtures were milled for 360 ks using a planetary ball mill. Milled powders have been consolidated using pulse current sintering process at 1373 K in vacuum. The compacts thus obtained consisted of FeAl and WC. The FeAl-WC has had almost the same vickers hardness as the specimen prepared using milled Fe-40at%Al powder and WC powder in the previous study. However, the transverse rupture strength of FeAl-WC prepared in this study was inferior to the latter process. This is due to the different microstructure of FeAl-WC prepared by the different process.
社団法人粉体粉末冶金協会の論文
2005-03-15