Structure and Fatigue Properties of the Mg Alloy AM60 Processed by ECAP

Autor(en)

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

Abstrakt

This paper reports on the microstructures and fatigue properties of ultrafine-grained (UFG) 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. In case of lowest ECAP temperature, the mean grain size is as small as 1 2m which leads to an increase in fatigue endurance limit by 70 % in comparison to coarse-grained alloy. The temperature of ECAP not only governs the grain size and misorientation angles of grain boundaries 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, Universität Ulm

Journal

Materials Science Forum

Band

584-586

Seiten

803-808

Anzahl der Seiten

6

ISSN

0255-5476

DOI

https://doi.org/10.4028/www.scientific.net/MSF.584-586.803

Publikationsdatum

2008

Peer-reviewed

Ja

ÖFOS 2012

103023 Polymerphysik, 210006 Nanotechnologie, 103018 Materialphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/99ee26b8-c95f-41c6-a876-fa61cf2e4767