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

Autor(en)

O.B. Kulyasova, Rinat K. Islamgaliev, Bernhard Mingler, Michael Zehetbauer

Abstrakt

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(en)

Physik Nanostrukturierter Materialien

Externe Organisation(en)

Ufa State Aviation Technical University, Austrian Research Centers GmbH (ARC Seibersdorf)

Journal

Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing

Band

503

Seiten

176-180

Anzahl der Seiten

5

ISSN

0921-5093

DOI

https://doi.org/10.1016/j.msea.2008.03.057

Publikationsdatum

2009

Peer-reviewed

Ja

ÖFOS 2012

103023 Polymerphysik, 210006 Nanotechnologie, 103018 Materialphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/3126e59d-781c-4063-82f5-15366b209b77