An overview: Fatigue behaviour of ultrafine-grained metals and alloys
作者： H HOPPEL , M KAUTZ , C XU , M MURASHKIN , T LANGDON
DOI: 10.1016/J.IJFATIGUE.2005.08.014
关键词:
摘要: The objectives of the present study were to assess and optimize fatigue behaviour in strain-controlled tests different ultrafine-grained (UFG) metals alloys (Cu, Al, AA6061, α-brass) prepared by equal channel angular pressing (ECAP). Quite generally, UFG materials investigated exhibited shorter lives low-cycle (LCF) regime than corresponding conventional grain (CG) size specimens. In all cases, could be enhanced appreciably a suitable heat treatment following ECAP without, however, paralleling CG microstructural reasons for this are discussed, microstructure-based life model is presented.
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