Low-cycle fatigue behaviour and microstructure of copper and alpha-brass under biaxial load paths

S. Henkel, J. Fischer, L. Balogh, T. Ungar, H. Biermann

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The low-cycle fatigue behaviour of copper and a-brass CuZn30 was investigated in uniaxial and biaxial tests. Planar biaxial fatigue tests were carried out using cruciform samples with proportional stain paths with and without phase shift between the two axes. Microcharacterisation was performed by electron microscopy as well as by high-resolution X-ray line profile analysis. The biaxial cyclic stress-strain curves show good agreement with the uniaxial ones using the von Mises equivalent strain hypothesis. The dislocation densities and microhardness values of the biaxial case, however, show significantly lower values compared to the uniaxial case at equivalent von Mises stresses.

Original languageEnglish
Article number012042
JournalJournal of Physics: Conference Series
Publication statusPublished - Jan 1 2010


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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