Shear bands evolution in ultrafine-grained aluminium under cyclic loading
Date
2013
Authors
Malekjani, S.
Hodgson, P.D.
Stanford, N.E.
Hilditch, T.B.
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Scripta Materialia, 2013; 68(10):821-824
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Abstract
The microstructural response and deformation mechanisms under cyclic and monotonic loading were investigated in a commercially pure Al subjected to grain refinement by cryorolling. A fatigue dependent shear banding and grain coarsening was detected and it was shown that pre-existing shear bands induced by cryorolling play a vital role in this regard. A rapid initial cyclic softening dominated by activation of pre-existing shear bands is replaced by a more gradual cyclic softening dominated by grain coarsening within these shear bands.
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Copyright 2013 Acta Materialia Inc.