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

Abstract:

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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.

Info:

Periodical:

Materials Science Forum (Volumes 584-586)

Edited by:

Yuri Estrin and Hans Jürgen Maier

Pages:

803-808

DOI:

10.4028/www.scientific.net/MSF.584-586.803

Citation:

R. K. Islamgaliev et al., "Structure and Fatigue Properties of the Mg Alloy AM60 Processed by ECAP", Materials Science Forum, Vols. 584-586, pp. 803-808, 2008

Online since:

June 2008

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Price:

$35.00

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