Investigations on Microstructure Evolution and Deformation Behavior of Aged and Ultrafine Grained Al-Zn-Mg Alloy Subjected to Severe Plastic Deformation

Abstract:

An aged Al-5Zn-1.6Mg alloy with fine η' precipitates was grain refined to ~100 nm grain size by severe plastic deformation (SPD). Microstructure evolution during SPD and mechanical behaviour after SPD of the alloy were characterized by electron microscopy and tensile, compression as well as nanoindentation tests. The influence of η' precipitates on microstructure and mechanical properties of ultrafine grained Al-Zn-Mg alloy is discussed with respect to their effect on dislocation configurations and deformation mechanisms during processing of the alloy.

• Periodical: Materials Science Forum (Volumes 667-669)
• Pages: 253-258
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.667-669.253
• Online since: December 2010
• Authors: Wei Ping Hu, Si Yuan Zhang, Xiao Yu He, Zhen Yang Liu, Rolf Berghammer, Günter Gottstein
• Keywords: Deformation Behavior, Microstructure, Severe Plastic Deformation (SPD), Ultrafine Grained

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