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A dislocation-based model considering free surface theory through HPT process: Nano-structured Ni

Hosseini, E ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. Publisher: 2010
  3. Abstract:
  4. In this study, a dislocation-based model is presented for investigating the evolution of micro structure and mechanical properties of thin films during a wide range of straining. The model is applied to the High Pressure Torsion (HPT) process of thin nickel disks that provides valuable information on the evolution of material parameters during deformation. The model considers a free surface theory for thin films and can explain the size effect phenomenon in agreement with previous reported trends in literature
  5. Keywords:
  6. Free surface theory ; Size effect phenomenon ; Dislocation-based model ; Free surfaces ; High pressure torsions ; HPT ; Material parameter ; Nano-structured ; Size effects ; High pressure engineering ; Mechanical properties ; Size determination ; Thin film ; Vapor deposition ; Surfaces ; Aislocation ; Model test ; Nanotechnology ; Nickel ; Size effect ; Torsion
  7. Source: Scientia Iranica ; Volume 17, Issue 1 F , 2010 , Pages 52-59 ; 10263098 (ISSN)
  8. URL: http://en.journals.sid.ir/ViewPaper.aspx?ID=184547