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On the influence of the grain size and solute content on the AE response of magnesium alloys tested in tension and compression

✍ Scribed by Jan Bohlen; Patrik Dobroň; Jacek Swiostek; Dietmar Letzig; František Chmelík; Pavel Lukáč; Karl Ulrich Kainer

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
286 KB
Volume
462
Category
Article
ISSN
0921-5093

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✦ Synopsis

Tensile and compression tests were conducted for AZ31, AZ61 and AZ80 alloys at room temperature. The distinctive tension/compression asymmetry in the yield behaviour was analysed for textured samples from extruded bars with various grain sizes. Parallel measurements of the acoustic emission were carried out to gather information about the relative activity of twinning and dislocation glide during deformation. The acoustic emission data are used to elaborate on the possible roles of grain size and aluminium content on the deformation behaviour.

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Extruded round bars from magnesium alloys ZM21, ZK30, ZE10 and ZEK100 with various grain sizes were tested in tension and compression. The effect of grain size on the deformation behaviour of the alloys was investigated through the Hall‐Petch relation. __In‐situ__ acoustic emission measurements were