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Temperature Dependence of the Flow Stress of Body-Centered-Cubic Metals

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Abstract:

By comparing the properties of dislocation-related relaxation processes in internal friction spectra and the tensile data of various iron alloys, we found that the temperature dependence of the flow stress is governed by the total distribution of the activation energies of dislocation motion. The derived model explains the origin of an anomalous temperature dependence of the flow stress in thermally aged Fe-1%Cu alloys, and Fe-x%Cr alloys as a function of Cr concentration, as well as the non-uniform temperature dependence of the flow stress in pure Fe.

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Periodical:

Solid State Phenomena (Volume 184)

Pages:

137-142

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.184.137

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Online since:

January 2012

Authors:

Milan J. Konstantinović

Keywords:

BCC Metals, Flow Stress, Internal Friction Coefficient

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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