Production and Thermal Stability of Nanocrystalline Fe and Fe Base Alloys

摘要

Results on the production of nanocrystalline Fe and Fe base alloys with the Simoloyer, a relatively new type of high speed horizontal attritor ball mill, are presented. It was possible to produce relatively large quantities of material in a short time frame. The technique itself can be upscaled in a straightforward manner to units with higher capacity. Annealing studies showed that both Fe-30at%W, produced by planetary milling, and Fe-10at%Mo, produced with the Simoloyer, were able to retain sufficient hardness at temperatures required for HIP compaction. The as-produced Fe-10at%Cu alloy showed considerably less thermal stability, probably partially due to the lower degree of alloying that was achieved due to the higher ductility of Cu.