Investigating the Effects of Expansion Equal Channel Angular Extrusion (Exp-ECAE) on Dynamic Behavior of AA7075 Aluminum Alloy
Expansion equal channel angular extrusion (Exp-ECAE) is a severe plastic deformation (SPD) operation for processing bulk materials. In the current study, AA7075 Al was SPD-processed by expansion equal channel angular extrusion (Ex-ECAE) at various temperatures and ram velocities. Then, using split H...
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| Format: | Article |
| Language: | English |
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Islamic Azad University-Isfahan (Khorasgan) Branch
2017-01-01
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| Series: | International Journal of Advanced Design and Manufacturing Technology |
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| Online Access: | https://admt.isfahan.iau.ir/article_534975_922400e6924d97b755c7408e8c5b9f1d.pdf |
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| author | J. Shahbazi Karami S. Sepahi-Boroujeni Mohsen Khodsetan |
| author_facet | J. Shahbazi Karami S. Sepahi-Boroujeni Mohsen Khodsetan |
| author_sort | J. Shahbazi Karami |
| collection | DOAJ |
| description | Expansion equal channel angular extrusion (Exp-ECAE) is a severe plastic deformation (SPD) operation for processing bulk materials. In the current study, AA7075 Al was SPD-processed by expansion equal channel angular extrusion (Ex-ECAE) at various temperatures and ram velocities. Then, using split Hopkinson pressure bar (SHPB), the severely deformed products were compressed at room temperature and strain rates of 0.1~3000 s-1. Both the strain rate sensitivity (SRS) and the apparent activation volume (AAV) were determined for all deformed samples. The results revealed that the Ex-ECAE operation has noticeably increased the SRS. The tensile strength at a strain rate of 3000 s-1 was 6 times increased by conducting Ex-ECAE at 100 °C and with a ram velocity of 7 mm/min. Ex-ECAE was also capable of considerably decreasing the AAV. The results showed the yield stress of both the Exp-ECAE and the annealed samples increased with increasing the strain rate. Also, the results showed that after the Exp-ECAE process, the AAV reached to 6.3 b3 from the initial values of 118.5 b3 in the annealed state. |
| first_indexed | 2024-03-11T17:42:16Z |
| format | Article |
| id | doaj.art-c5d701d64d11428ab335994c89863892 |
| institution | Directory Open Access Journal |
| issn | 2252-0406 2383-4447 |
| language | English |
| last_indexed | 2024-03-11T17:42:16Z |
| publishDate | 2017-01-01 |
| publisher | Islamic Azad University-Isfahan (Khorasgan) Branch |
| record_format | Article |
| series | International Journal of Advanced Design and Manufacturing Technology |
| spelling | doaj.art-c5d701d64d11428ab335994c898638922023-10-18T09:20:10ZengIslamic Azad University-Isfahan (Khorasgan) BranchInternational Journal of Advanced Design and Manufacturing Technology2252-04062383-44472017-01-01931118534975Investigating the Effects of Expansion Equal Channel Angular Extrusion (Exp-ECAE) on Dynamic Behavior of AA7075 Aluminum AlloyJ. Shahbazi Karami0S. Sepahi-Boroujeni1Mohsen Khodsetan2University of Shahid Rajaee Teacher Training, IranUniversity of Bu-Ali Sina, Iran.School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran. *Corresponding authorExpansion equal channel angular extrusion (Exp-ECAE) is a severe plastic deformation (SPD) operation for processing bulk materials. In the current study, AA7075 Al was SPD-processed by expansion equal channel angular extrusion (Ex-ECAE) at various temperatures and ram velocities. Then, using split Hopkinson pressure bar (SHPB), the severely deformed products were compressed at room temperature and strain rates of 0.1~3000 s-1. Both the strain rate sensitivity (SRS) and the apparent activation volume (AAV) were determined for all deformed samples. The results revealed that the Ex-ECAE operation has noticeably increased the SRS. The tensile strength at a strain rate of 3000 s-1 was 6 times increased by conducting Ex-ECAE at 100 °C and with a ram velocity of 7 mm/min. Ex-ECAE was also capable of considerably decreasing the AAV. The results showed the yield stress of both the Exp-ECAE and the annealed samples increased with increasing the strain rate. Also, the results showed that after the Exp-ECAE process, the AAV reached to 6.3 b3 from the initial values of 118.5 b3 in the annealed state.https://admt.isfahan.iau.ir/article_534975_922400e6924d97b755c7408e8c5b9f1d.pdfaa7075 aluminum alloydynamic behaviorexpansion equal channel angular extrusionhopkinson pressure barsevere plastic deformation |
| spellingShingle | J. Shahbazi Karami S. Sepahi-Boroujeni Mohsen Khodsetan Investigating the Effects of Expansion Equal Channel Angular Extrusion (Exp-ECAE) on Dynamic Behavior of AA7075 Aluminum Alloy International Journal of Advanced Design and Manufacturing Technology aa7075 aluminum alloy dynamic behavior expansion equal channel angular extrusion hopkinson pressure bar severe plastic deformation |
| title | Investigating the Effects of Expansion Equal Channel Angular Extrusion (Exp-ECAE) on Dynamic Behavior of AA7075 Aluminum Alloy |
| title_full | Investigating the Effects of Expansion Equal Channel Angular Extrusion (Exp-ECAE) on Dynamic Behavior of AA7075 Aluminum Alloy |
| title_fullStr | Investigating the Effects of Expansion Equal Channel Angular Extrusion (Exp-ECAE) on Dynamic Behavior of AA7075 Aluminum Alloy |
| title_full_unstemmed | Investigating the Effects of Expansion Equal Channel Angular Extrusion (Exp-ECAE) on Dynamic Behavior of AA7075 Aluminum Alloy |
| title_short | Investigating the Effects of Expansion Equal Channel Angular Extrusion (Exp-ECAE) on Dynamic Behavior of AA7075 Aluminum Alloy |
| title_sort | investigating the effects of expansion equal channel angular extrusion exp ecae on dynamic behavior of aa7075 aluminum alloy |
| topic | aa7075 aluminum alloy dynamic behavior expansion equal channel angular extrusion hopkinson pressure bar severe plastic deformation |
| url | https://admt.isfahan.iau.ir/article_534975_922400e6924d97b755c7408e8c5b9f1d.pdf |
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