Paper Title:
Stress Relaxation in an AZ31 Magnesium Alloy
  Abstract

Stress relaxation tests have been used in order to determine parameters of a possible thermally activated process in AZ31 magnesium alloy. The samples were deformed at a constant initial strain rate of 6.7x10-5 s-1 at various temperatures between room temperature and 300 °C. Stress relaxation, i.e. a decrease in the stress with time, was measured at various stress levels and at various temperatures. An analysis of the stress relaxation curves enabled to estimate the internal stress as a function of the strain and the test temperature. It has been shown that the activation volume is a function of the effective stress independently of the deformation temperature.

  Info
Periodical
Edited by
Pavel Šandera
Pages
101-104
DOI
10.4028/www.scientific.net/KEM.465.101
Citation
P. Lukáč, Z. Trojanová, "Stress Relaxation in an AZ31 Magnesium Alloy", Key Engineering Materials, Vol. 465, pp. 101-104, 2011
Online since
January 2011
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