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Metallurgical and Materials Transactions A

, Volume 40, Issue 2, pp 278–281 | Cite as

Superplastic Behavior of a High-Strength Al-Zn-Mg-Cu-Zr Alloy

  • A. Kumar
  • A.K. MukhopadhyayEmail author
  • K.S. Prasad
Communication

Abstract

The present study examines the superplastic potential of Al-Zn-Mg-Cu-Zr alloy AA 7449. It is demonstrated that the use of a suitable thermomechanical process (TMP) prior to superplastic deformation, together with the use of appropriate combinations of strain rate and temperature during the tensile test, enabled development of grain structures amenable (having an average grain size of <10 μm) to superplastic deformation in this alloy. This yielded as high as 460 pct elongation.

Keywords

Transmission Electron Micrograph Subgrain Boundary Static Recrystallization Al3Zr Superplastic Deformation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

The authors acknowledge the financial support by the Defence Research and Development Organisation (DRDO), Government of India.

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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2008

Authors and Affiliations

  1. 1.Defence Metallurgical Research LaboratoryHyderabadIndia

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