Annealing Effects after Various Thermo-Mechanical Treatments on Microstructure and Mechanical Properties of Wrought Magnesium Alloy ZK60

• Authors: M. Oo , M. Janeček , R. Kral , L. Wagner
• Languages of publication: EN

Abstracts

EN

The magnesium alloy ZK60 received from Dead Sea Magnesium in direct-chill cast condition was extruded at T = 350C using an extrusion ratio of ER = 12. The extruded bars were severely plastically deformed at 250C by either equal channel angular pressing or swaging. While swaging led to similar grain refinements as observed after equal channel angular pressing, yield stress and tensile strength values were by far superior in the swaged material. This result is explained by the unfavourable 45° texture component of the (0002) pole figure that develops during the massive shear deformation in equal channel angular pressing. Unlike equal channel angular pressing, the grain orientation after swaging is similar as in the as-extruded condition. Annealing at elevated temperatures indicates very low thermal stability of microstructure and mechanical properties in the equal channel angular pressing material while both properties in the swaged microstructure are as stable as in the as-extruded reference.

Keywords

EN

81.40.Gh; 81.07.Bc; 61.05.cp

Discipline

• 61.05.cp: X-ray diffraction
• 81.07.Bc: Nanocrystalline materials
• 81.40.Gh: Other heat and thermomechanical treatments

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 122
• Issue: 3
• Pages: 606-609

Dates

published

2012-09

Contributors

author

M. Oo

• Institute of Materials Science and Technology, Clausthal University of Technology, Clausthal-Zellerfeld, Germany

author

M. Janeček

• Department of Physics of Materials, Charles University, Prague, Czech Republic

author

R. Kral

• Department of Physics of Materials, Charles University, Prague, Czech Republic

author

L. Wagner

• Institute of Materials Science and Technology, Clausthal University of Technology, Clausthal-Zellerfeld, Germany

References

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Identifiers

DOI

10.12693/APhysPolA.122.606