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Document details

Materials Science and Engineering AVolume 565, 10 March 2013, Pages 301-307

High temperature deformation characteristics of equal channel angular pressed AA6082-T6(Article)

  • aMechanical Engineering Department, College of Engineering, King Saud University, Riyadh 11421, P.O. Box 800, Saudi Arabia
  • bCenter of Excellence for Research in Engineering Material, Advanced Manufacturing Institute, King Saud University, Riyadh, Saudi Arabia

Abstract

High temperature deformation behavior of 6082AA that was over aged and pressed to 6 passes in equal channel angular die via route C was investigated. High-temperature tensile deformation was conducted in the range of 753 to 823K at four strain rates in the range of 10-2-6×10-1s-1. Stress dependence of the strain rate revealed a stress exponent, n of 7 throughout the ranges of temperatures and strain rates tested. The apparent activation energy was calculated to be 223kJmole-1. These findings implied the presence of threshold and by incorporating the threshold stress in the analysis, the true activation energy was calculated to be about 139kJmol-1. A plot of normalized strain rate (ε̇kT/DGb) vs. normalized effective stress (σ-σo)/G, on a double logarithmic scale, gave an n value of 5. Ductility increased with strain rate for all the temperature ranges and maximum ductility value of 173% was achieved at 823K for 6×10-1s-1. © 2012 Elsevier B.V.

Author keywords

  • 6082 Aluminum alloy
  • Dislocation climb
  • ECAP
  • High temperature deformation
  • Threshold stress

Indexed keywords

Compendex keywords6082 aluminum alloyDislocation climbECAPHigh temperature deformationThreshold stress
Engineering controlled terms:Activation energyDeformationDuctilityEqual channel angular pressing
Engineering main heading:Strain rate

Funding details

Funding numberFunding sponsorAcronym
National Plan for Science, Technology and InnovationNPST
10-AVD1032-02King Saud UniversityKSU
National Plan for Science,Technology and InnovationNPST

Funding text

This work was supported by National Plan for Science and Technology (NPST) by King Saud University through the Project no. 10-AVD1032-02.

  • ISSN: 09215093
  • Source Type: Journal
  • Original language: English
  • DOI: 10.1016/j.msea.2012.12.027
  • Document Type: Article

  El-Danaf, E.A.; Mechanical Engineering Department, College of Engineering, King Saud University, Riyadh 11421, P.O. Box 800, Saudi Arabia;
© Copyright 2013 Elsevier B.V., All rights reserved.

Cited by 4 documents

Baig, M. , El-Danaf, E. , Mohammed, J.A.
A Study on the Synergistic Effect of ECAP and Aging Treatment on the Mechanical Properties of AA6082
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Surendarnath, S. , Sankaranarayanasamy, K. , Ravisankar, B.
Experimental investigation on the performance of an improved equal channel angular pressing die
(2014) IOP Conference Series: Materials Science and Engineering
Iqbal, U.M. , Kumar, V.S.S.
Modeling of twist extrusion process parameters of AA6082-T6 alloy by response surface approach
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