Mechanically Milled Iron Alloys for High-Temperature Magnetic and Structural Applications
Final rept. 1 Aug 2002-31 Jul 2003
VIRGINIA STATE UNIV PETERSBURG
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Mechanically-milled alloys of iron with cobalt Hypercoand aluminum have been fabricated with a puck-and-saucer mill, and have been studied with the bulk magnetization, differential scanning spectrometry, neutron scattering and muon spin rotation techniques. One as-yet-unresolved problem is that of compaction. Two major discoveries concerning iron-aluminum alloys were made during this reporting period, inverse melting, and the presence of incommensurate static spin-density waves. A laboratory for preparation and characterization of magnetically-ordered materials has been assembled and is still under development. It includes two high-precision field-gradient magnetometers, a differential scanning calorimeter, the puck-and-saucer mill, an annealing furnace, and associated electronics and computers. Several papers were published during this reporting period, and two graduate students are doing their thesis research in this laboratory.
- Metallurgy and Metallography