Accession Number:

ADA416833

Title:

Mechanically Milled Iron Alloys for High-Temperature Magnetic and Structural Applications

Descriptive Note:

Final rept. 1 Aug 2002-31 Jul 2003

Corporate Author:

VIRGINIA STATE UNIV PETERSBURG

Report Date:

2003-08-29

Pagination or Media Count:

13.0

Abstract:

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.

Subject Categories:

  • Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE