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Mechanical Properties of ECAP Processed Magnesium Alloy AS21X

Materials science forum 2006 6 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
T.T. Lamark, Ralph Jörg Hellmig, Yuri Estrin

Summary

Magnesium alloys normally exhibit microplastic behavior at low stresses, limiting their use in precision applications; this study tested whether equal channel angular pressing (ECAP) grain refinement could extend the elastic range of the AS21X alloy. Cyclic tensile tests confirmed that ECAP-processed samples showed improved microplastic resistance compared to conventional grain size material.

Typically, magnesium alloys with conventional grain size exhibit microplastic behaviour already at low stresses. This behaviour restricts the technological utilization of these materials. The aim of this study was to investigate whether ECAP can be applied to enlarge the elastic range of AS21X. Cyclic tensile tests at room temperature were carried out to examine the effect of the ECAP induced grain refinement on the elastic properties. The results obtained are compared with the cyclic behaviour of conventional, coarse-grained AS21X. The differences in mechanical properties between the two conditions are discussed.

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