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Enhanced mechanical properties in ultrafine grained 7075 Al alloy

  • Y.H. Zhao (a1), X.Z. Liao (a1), Y.T. Zhu (a1) and R.Z. Valiev (a2)

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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Corresponding author

a) Address all correspondence to this author. e-mail: yzhu@lanl.gov

References

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Keywords

Enhanced mechanical properties in ultrafine grained 7075 Al alloy

  • Y.H. Zhao (a1), X.Z. Liao (a1), Y.T. Zhu (a1) and R.Z. Valiev (a2)

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