Fatigue Life Improvement of Copper Processed by Equal Channel Angular Pressing

  • S. Khalilpourazary
  • M. ZadshakoyanEmail author
  • S.H. Hoseini


In this paper, the high cycle fatigue life of ultra-fine grained copper, purity 99.7%, processed by equal channel angular pressing (ECAP) has been considered. To produce the ECAPed specimens, the associated die set was designed and manufactured. Mechanical properties of the ECAPed material were evaluated by standard tensile tests. Moreover, the high cycle fatigue life was assessed using a cantilever rotating bending machine at room temperature at 50 Hz frequency. Based on the obtained results, the estimated S-N diagram was constructed. The experimental results showed that the tensile strength of the pure copper has been remarkably increased using equal channel angular pressing. In addition, the fatigue life at high stress amplitudes was significantly improved. For instance, the fatigue life at stress amplitude equals 180 MPa increases approximately ten times. However, an insignificant increase in the fatigue limit endurance was observed in the long life regime in excess of ten million cycles. Furthermore, the fatigue life was not affected by the number of ECAP pass.


High cycle fatigue Equal channel angular pressing Copper Average grain size 


Compliance with Ethical Standards

Conflict of Interest

On behalf of all authors, the corresponding author states that there is no conflict of interest.


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Copyright information

© The Society for Experimental Mechanics, Inc 2019

Authors and Affiliations

  • S. Khalilpourazary
    • 1
  • M. Zadshakoyan
    • 1
    Email author
  • S.H. Hoseini
    • 2
  1. 1.Department of Manufacturing and Production Engineering, Faculty of Mechanical EngineeringUniversity of TabrizTabrizIran
  2. 2.Faculty of Mechanical EngineeringUrmia University of TechnologyUrmiaIran

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