Abstract

In this paper, the cyclic stress response characteristics of aluminum alloy 6061 is presented. Test specimens of the alloy were cyclically deformed using fully-reversed tension–compression loading under total strain amplitude control. The alloy showed evidence of initial hardening followed by progressive softening to failure. The stress response, deformation characteristics and fracture behavior of the alloy is interactively discussed in light of the competing influences of intrinsic microstructure contributions and deformation behavior arising from a combination of mechanical and microstructural contributions.

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