Paper Title:
Strain Rate Sensitivity of Ultrafine Grained FCC- and BCC-Type Metals
  Abstract

The dependence of the strain rate sensitivity (SRS) of α-Fe and Al 99.5, as typical representatives of fcc- and bcc-type metals, on the testing temperature and with respect to the microstructure is investigated. In particular, the differences between conventional grain size (CG) and ultrafine grain size (UFG) are pointed out. UFG Al 99.5 generally shows an elevated SRS compared to CG Al 99.5. In case of α-Fe the SRS of the UFG state is decreased at room temperature, but increased at 200 °C, compared to the CG state. It is shown that the SRS also influences the ductility of UFG-metals in tensile tests.

  Info
Periodical
Materials Science Forum (Volumes 503-504)
Edited by
Zenji Horita
Pages
781-786
DOI
10.4028/www.scientific.net/MSF.503-504.781
Citation
J. May, H. W. Höppel, M. Göken, "Strain Rate Sensitivity of Ultrafine Grained FCC- and BCC-Type Metals", Materials Science Forum, Vols. 503-504, pp. 781-786, 2006
Online since
January 2006
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$32.00
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