Microstructure Evolution in AZ31 Magnesium Alloy Worked by Torsion at Warm Temperature

Koji Aoyama; Mitsuaki Furui; Susumu Ikeno

doi:10.4028/www.scientific.net/MSF.654-656.727

Paper Titles

Grain Refinement of Magnesium Alloy AZ31 under Torsion Extrusion with a Square-Hole Die
p.711

Twinning Behavior in AZ31-B Polycrystal Texture Subjected to In-Situ Bending Test
p.715

Texture and Mechanical Properties of AZ31 Magnesium Alloy Sheets Processed by Symmetric/Asymmetric Combination Hot-Rolling
p.719

Crystallographic Orientation Dependence of Fatigue Crack Propagation Behavior in Rolled AZ31 Magnesium Alloy
p.723

Microstructure Evolution in AZ31 Magnesium Alloy Worked by Torsion at Warm Temperature
p.727

Deep Drawing of AM31 Magnesium Alloys
p.731

Grain Refinement by Combined ECAE/Extrusion and Dieless Drawing Processes for AZ31 Magnesium Alloy Tubes
p.735

Warm Hydroforming Process with Non-Uniform Heating for AZ31 Magnesium Alloy Tube
p.739

Sound Insulation Study on Mg Sheet and Mg Honeycomb Panels
p.743

HomeMaterials Science ForumMaterials Science Forum Vols. 654-656Microstructure Evolution in AZ31 Magnesium Alloy...

Microstructure Evolution in AZ31 Magnesium Alloy Worked by Torsion at Warm Temperature

Abstract:

It had been already reported that the resistance of compression at warm condition can be decreased by the preliminary torsion working at AZ31B magnesium alloy. In the present study, it was found that the dynamic recrystallization occured during warm working by torsion. Dynamic recrystallization was slightly seen in the fractured edge of the bar at a rotation speed of 1rpm at temperature 573K and 623K. The amount of torsion to fracture was increased with increasing of deformation temperature. Remarkable dynamic recrystallization could be seen in the center of bar at the rotation speed of 1rpm at temperature of 673K.

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Periodical:

Materials Science Forum (Volumes 654-656)

Pages:

727-730

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.654-656.727

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Online since:

June 2010

Authors:

Koji Aoyama, Mitsuaki Furui, Susumu Ikeno

Keywords:

AZ31B Magnesium Alloy, Dynamic Recrystallization (DRX), Fine Grain, Torsion

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References

[1] H. Anada, I. Tanaka, M. Furui and S. Saji: J. Jpn. Inst. Light Met., 53(2003), 20.

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[2] X. Yang, H. Miura and T. Sakai: Jpn. Inst. Light Met., 7(2002), 52. Fig. 5 Microstructure of each distance from hinged end. (a) 330mm, (b) 370mm and (c) 450mm. Fig. 6 Microstructure from center to edge of section in (a) 623K and (b) 673K.

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