Effect of Grain Size on the Performance of Extruded Magnesium Alloy Tubes in Three-Point Bending

Abstract:

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The performance of extruded AZ31, AZ61 and AM-EX1 tubes was examined in three-point bending. Different extrusion temperatures were used to investigate the effect of grain size on the load-carrying capacity, energy absorption and fracture propensity of the tubes. Results showed that while the peak load increased with a smaller average recrystallised grain size, the retention of large elongated un-recrystallised grains in the microstructure reduced the load. The presence of the large elongated grains also appeared detrimental to the ability of the tube to deform before fracture.

Info:

Periodical:

Materials Science Forum (Volumes 618-619)

Edited by:

M.S. Dargusch & S.M. Keay

Pages:

523-526

DOI:

10.4028/www.scientific.net/MSF.618-619.523

Citation:

T. B. Hilditch et al., "Effect of Grain Size on the Performance of Extruded Magnesium Alloy Tubes in Three-Point Bending", Materials Science Forum, Vols. 618-619, pp. 523-526, 2009

Online since:

April 2009

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Price:

$35.00

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