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Enhanced mechanical properties in ultrafine grained 7075 Al alloy

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Abstract

Highest strength for 7075 Al alloy was obtained by combining the equal-channel-angular pressing (ECAP) and natural aging processes. The tensile yield strength and ultimate strength of the ECAP processed and naturally aged sample were 103% and 35% higher, respectively, than those of the coarse-grained 7075 Al alloy counterpart. The enhanced strength resulted from high densities of Guinier–Preston (G-P) zones and dislocations. This study shows that severe plastic deformation has the potential to significantly enhance the mechanical properties of precipitate hardening 7000 series Al alloys.

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Authors and Affiliations

  1. Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA

    Y. H. Zhao, X. Z. Liao & Y. T. Zhu

  2. Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, 450000, Ufa, Russian Federation

    R. Z. Valiev

Authors
  1. Y. H. Zhao
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  2. X. Z. Liao
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  3. Y. T. Zhu
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  4. R. Z. Valiev
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Correspondence to Y. H. Zhao.

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Zhao, Y.H., Liao, X.Z., Zhu, Y.T. et al. Enhanced mechanical properties in ultrafine grained 7075 Al alloy. Journal of Materials Research 20, 288–291 (2005). https://doi.org/10.1557/JMR.2005.0057

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  • DOI: https://doi.org/10.1557/JMR.2005.0057

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