| Free volume study of severely plastic deformed pure Fe |
| Paper ID : 2076-UFGNSM13-FULL (R1) |
| Authors: |
|
Nazanin Forouzanmehr *1, Mahmoud Nili-Ahmadabadi2 1school of metallurgy and materials engineering, University of Tehran, Iran 2School of Metallurgy and Materials Engineering, University College of Engineering, University of Tehran |
| Abstract: |
| There is a growing interest for investigation of free-volume type defects in SPD-processed ultrafine-grained materials. In the present work, excess free volume in pure Fe prepared by shaped rolling is studied by high-resolution differential dilatometer as well as Archimedes’ method. The results show the formation of excess volume with increasing deformation strain. The volume fraction of free volume detected by dilatometer is below the evaluation of Archimedes’ method maybe because of the existence of void in the deformed metal. Microstructural study by field emission type scanning electron microscope confirms the presence of voids. |
| Keywords: |
| Free volume, Severe plastic deformation |
| Status : Paper Accepted (Oral Presentation) |
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