Microstructure and fatigue properties of the ultrafine-grained AM60 magnesium alloy processed by Equal Channel Angular Pressing

Author(s)
O.B. Kulyasova, Rinat K. Islamgaliev, Bernhard Mingler, Michael Zehetbauer
Abstract

This paper reports on the microstructures and fatigue properties of the ultrafine-grained AM60 magnesium alloy processed by equal-channel angular pressing (ECAP) at various temperatures. After ECAP processing, samples exhibited an increase in fatigue endurance limit, which correlates well with a decrease in grain size. For the lowest ECAP temperature, the mean grain size is as small as 1 μm which leads to an increase in the fatigue endurance limit by 70% in comparison to coarse-grained alloy. The temperature of ECAP not only governs the grain size but also the volume fraction of precipitates, thus affecting the probability of twinning and grain growth after fatigue treatment.

Organisation(s)
Physics of Nanostructured Materials
External organisation(s)
Ufa State Aviation Technical University, Austrian Research Centers GmbH (ARC Seibersdorf)
Journal
Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing
Volume
503
Pages
176-180
No. of pages
5
ISSN
0921-5093
DOI
https://doi.org/10.1016/j.msea.2008.03.057
Publication date
2009
Peer reviewed
Yes
Austrian Fields of Science 2012
103023 Polymer physics, 210006 Nanotechnology, 103018 Materials physics
Portal url
https://ucris.univie.ac.at/portal/en/publications/microstructure-and-fatigue-properties-of-the-ultrafinegrained-am60-magnesium-alloy-processed-by-equal-channel-angular-pressing(3126e59d-781c-4063-82f5-15366b209b77).html