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

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

Veröffentlichungen: Beitrag in FachzeitschriftArtikelPeer Reviewed

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.
OriginalspracheEnglisch
Seiten (von - bis)176-180
Seitenumfang5
FachzeitschriftMaterials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing
Jahrgang503
Ausgabenummer1-2
DOIs
PublikationsstatusVeröffentlicht - 2009

ÖFOS 2012

  • 103023 Polymerphysik
  • 210006 Nanotechnologie
  • 103018 Materialphysik

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