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Microstructrual evolution of aluminum 6061 alloy through tube channel pressing

Farshidi, M. H ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.msea.2014.07.061
  3. Abstract:
  4. The evolution of microstructure and the mechanical properties of an aluminum 6061 alloy tube subjected to a novel severe plastic deformation process called tube channel pressing were studied. Results show that the tube channel pressing causes an impressive grain refinement and strengthening of the material. As an illustration, mostly ultrafine grained tube (D-=760nm) bearing the yield strength of 352. MPa can be obtained after 5 passes of tube channel pressing. Additionally, the tube channel pressing causes the heterogeneous grain refinement resulting in a bimodal distribution of size of grains after 7th pass. Therefore, it can be inferred that the main microstructure refining mechanism caused by tube channel pressing process is intersection of microshear-bands
  5. Keywords:
  6. 6061 aluminum alloy ; Grain refinement ; Microshear-band ; Severe plastic deformation ; Tube channel pressing ; Aluminum ; Aluminum alloys ; Grain size and shape ; Mechanical properties ; Microstructural evolution ; Plastic deformation ; 6061 aluminum alloys ; Bimodal distribution ; Microstructure refining ; Severe plastic deformation process ; Severe plastic deformations ; Tube channel pressings ; Ultrafine-grained ; Tubes (components)
  7. Source: Materials Science and Engineering A ; Vol. 615 , 2014 , pp. 139-147 ; ISSN: 09215093
  8. URL: http://www.sciencedirect.com/science/article/pii/S0921509314009289