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Initiation of Fatigue Cracks in Ultrafine-grained Materials in High-cycle Fatigue Region
Initiation of fatigue cracks in materials with conventional grain (CG) size was investigated very thoroughly in the past. There is an extensive knowledge on the localization of cyclic plasticity and early crack development; ...
Initiation of fatigue cracks in AZ91 Mg alloy processed by ECAP
(IOP Publishing, 2014-08-08)
Mechanism of fatigue crack initiation was investigated in ultrafine-grained (UFG) magnesium alloy AZ91 processed by equal channel angular pressing (ECAP). Fatigue behaviour of UFG material was compared to the behaviour of ...