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Abstract

Severe Plastic Deformation (SPD) techniques have been used by researchers for last three decades in order to obtain Ultra-Fine Grained (UFG) materials. Equal Channel Angular Pressing (ECAP) is preferred more than other SPD techniques thanks to its high performance and practicability. Hexa Equal Channel Angular Pressing (Hexa-ECAP) – modified ECAP technique which enables to apply ECAP routes for cylindrical samples properly – was preferred in this study. Within the objective of this study, the effects of coefficient and ram velocity on the mean effective strain and strain inhomogeneity of Hexa-ECAP processed Al7075 aluminium alloy were investigated. Also, the effects of ram velocity and friction coefficient on hardness homogeneity were investigated benefitting from the similarity between the hardness distribution and the strain distribution.
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Authors and Affiliations

Serkan Öğüt
1
ORCID: ORCID
Hasan Kaya
2
Aykut Kentli
1
Kerim Özbeyaz
1
Mehmet Şahbaz
3
Mehmet Uçar
4

  1. Marmara University, Faculty of Engineering, Mechanical Engineering Department, Istanbul – Turkey
  2. Kocaeli University, Asım Kocabıyık Vocational School, Machine and Metal Technology Department, Kocaeli – Turkey
  3. Karamanoğlu Mehmetbey University, Faculty of Engineering, Mechanical Engineering Department, Karaman, Turkey
  4. Kocaeli University, Faculty of Technology, Automotive Engineering Department, Kocaeli – Turkey

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