Relationship between texture and low temperature superplasticity in an extruded AZ31 Mg alloy processed by ECAP

The development of low temperature superplasticity and texture is examined in an AZ31 Mg alloy after extrusion and processing by equal-channel angular pressing (ECAP). It is demonstrated that an elongation of ∼460% may be attained at a temperature of 150 °C, equivalent to 0.46 T m where T m is the a...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2005-08, Vol.402 (1), p.250-257
Main Authors: Lin, H.K., Huang, J.C., Langdon, T.G.
Format: Article
Language:English
Subjects:
Applied sciences
Cross-disciplinary physics: materials science
rheology
Elasticity. Plasticity
Equal-channel angular pressing
Exact sciences and technology
Extrusion
Magnesium
Materials science
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Other heat and thermomechanical treatments
Physics
Superplasticity
Texture
Treatment of materials and its effects on microstructure and properties
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Summary:The development of low temperature superplasticity and texture is examined in an AZ31 Mg alloy after extrusion and processing by equal-channel angular pressing (ECAP). It is demonstrated that an elongation of ∼460% may be attained at a temperature of 150 °C, equivalent to 0.46 T m where T m is the absolute melting temperature. This result demonstrates the potential for achieving low temperature superplasticity. The experimental results show that the mechanical properties of the alloy are influenced by the different textures present after extrusion and after extrusion and subsequent processing by ECAP.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2005.04.018