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Journal of Materials Engineering and Performance

, Volume 21, Issue 2, pp 143–152 | Cite as

Simulation of Aluminum Powder in Tube Compaction Using Equal Channel Angular Extrusion

  • Reza Derakhshandeh Haghighi
  • Ahmad Jenabali JahromiEmail author
  • Behnam Esfandiar Jahromi
Article

Abstract

Aluminum powder in tube compaction with a 25 mm front plug through equal channel angular extrusion (ECAE) at room temperature was modeled using the finite element analysis package ABAQUS. The Gurson model was used in modeling this process. 2-D simulations in a 90° angle die showed better consolidation of powder near the inner edge of the die than the outer edge after one pass of ECAE but almost full densification occurs after two passes. The effect of hydrostatic pressure on densification of the powder was investigated by using two plugs varying in length dimension. The results obtained from the simulations were also compared with experiments conducted to compact aluminum powder with mean particle diameter of 45 μm. Optical microscopy, microhardness test, and density measurements confirmed the simulations. The simulations were extended to powder compaction in a 60° and 120° angle die. It was found that one pass of ECAE is sufficient to consolidate the aluminum powder completely and uniformly in a 60° angle die, whereas the material is still porous in a 120° angle die.

Keywords

equal channel angular extrusion finite element modeling hydrostatic pressure powder compaction 

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Copyright information

© ASM International 2011

Authors and Affiliations

  • Reza Derakhshandeh Haghighi
    • 1
  • Ahmad Jenabali Jahromi
    • 1
    Email author
  • Behnam Esfandiar Jahromi
    • 2
  1. 1.Department of Materials Science and Engineering, School of EngineeringShiraz UniversityShirazIran
  2. 2.Department of Mechanical EngineeringPolitecnico di Milano UniversityMilanItaly

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