Plastic deformation of nanophase metals

L. Kim, J. Hofler, A. Daykin, R. Averback, C. Altstetter

Research output: Contribution to journalConference articlepeer-review


Nanophase powders of pure metals and intermetallic compounds were produced by inert gas condensation of metal vapor, and they were compacted into solid specimens in situ. The deformation behavior of these compacted foils was evaluated using microhardness indentation and TEM. Microhardness was measured at room temperature and at slightly elevated temperatures. The time and temperature dependence of the indentation size was used to estimate creep parameters. A number of single phase and two phase materials have been examined; this paper deals with pure copper, pure iron and TiAl. The nanophase compacts were all at least a factor of two harder than the material having micron-size grains. The dependence of hardness on grain size, and the effect of temperature on hardness are interpreted in terms of interface deformation processes.

Original languageEnglish (US)
Pages (from-to)367-372
Number of pages6
JournalMaterials Science Forum
StatePublished - 1995
EventProceedings of the 2nd International Conference on the Role of Interfaces in Advanced Materials Design, Processing and Performance - Ballarat, Aust
Duration: Nov 1 1993Nov 5 1993

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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