Experimental study of forming limit diagram and mechanical properties of aluminum foils processed by the accumulative roll bonding
In this article, for the first time, the forming limit diagram (FLD) and mechanical properties of aluminum foil samples processed by the accumulative roll bonding (ARB) process have been studied experimentally. For this purpose, thin aluminum foils with a thickness of 200 microns have been produced...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/abced9 |
| _version_ | 1797746796723699712 |
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| author | E A Alisaraei R Hashemi D Rahmatabadi C Sommitsch |
| author_facet | E A Alisaraei R Hashemi D Rahmatabadi C Sommitsch |
| author_sort | E A Alisaraei |
| collection | DOAJ |
| description | In this article, for the first time, the forming limit diagram (FLD) and mechanical properties of aluminum foil samples processed by the accumulative roll bonding (ARB) process have been studied experimentally. For this purpose, thin aluminum foils with a thickness of 200 microns have been produced using ARB in five passes at ambient temperature. By rising the number of ARB passes, the ultimate tensile strength (UTS) enhanced drastically, and at the end pass of ARB, it reached 393 MPa, about 5.9 times larger than the initial sample. Also, during the ARB process, the applied strain increased, and the thickness of the layers decreased, and the bonding quality between layers improved. SEM images of tensile fracture surface after five cycles showed the mechanism of fracture retained ductile. However, due to the unevenly applied strain, the dimples were drawn in different directions, and their depth and number were reduced relative to the raw material. The area under the FLDs, a criterion of formability, declined sharply after the first pass and then increased at a low rate until the final pass. The trend of similar changes of formability in the tensile (elongation) and Nakazima tests (FLDs) was reported. Responsibility for all mechanical properties and ductility changes is related to the ARB process’s nature and the two dominant mechanisms of strain hardening and grain refinement. |
| first_indexed | 2024-03-12T15:41:53Z |
| format | Article |
| id | doaj.art-257c908f855c449eaa3811d9c085c46b |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:41:53Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-257c908f855c449eaa3811d9c085c46b2023-08-09T15:55:22ZengIOP PublishingMaterials Research Express2053-15912020-01-0171212651110.1088/2053-1591/abced9Experimental study of forming limit diagram and mechanical properties of aluminum foils processed by the accumulative roll bondingE A Alisaraei0R Hashemi1https://orcid.org/0000-0001-8369-0390D Rahmatabadi2C Sommitsch3School of Mechanical Engineering, Iran University of Science and Technology , Tehran, Iran; Center for International Scientific Studies & Collaboration (CISSC), Ministry of Science Research and Technology, Tehran, IranSchool of Mechanical Engineering, Iran University of Science and Technology , Tehran, Iran; Center for International Scientific Studies & Collaboration (CISSC), Ministry of Science Research and Technology, Tehran, IranSchool of Mechanical Engineering, Iran University of Science and Technology , Tehran, Iran; Center for International Scientific Studies & Collaboration (CISSC), Ministry of Science Research and Technology, Tehran, IranInstitute of Materials Science, Joining and Forming, Graz University of Technology, Graz, AustriaIn this article, for the first time, the forming limit diagram (FLD) and mechanical properties of aluminum foil samples processed by the accumulative roll bonding (ARB) process have been studied experimentally. For this purpose, thin aluminum foils with a thickness of 200 microns have been produced using ARB in five passes at ambient temperature. By rising the number of ARB passes, the ultimate tensile strength (UTS) enhanced drastically, and at the end pass of ARB, it reached 393 MPa, about 5.9 times larger than the initial sample. Also, during the ARB process, the applied strain increased, and the thickness of the layers decreased, and the bonding quality between layers improved. SEM images of tensile fracture surface after five cycles showed the mechanism of fracture retained ductile. However, due to the unevenly applied strain, the dimples were drawn in different directions, and their depth and number were reduced relative to the raw material. The area under the FLDs, a criterion of formability, declined sharply after the first pass and then increased at a low rate until the final pass. The trend of similar changes of formability in the tensile (elongation) and Nakazima tests (FLDs) was reported. Responsibility for all mechanical properties and ductility changes is related to the ARB process’s nature and the two dominant mechanisms of strain hardening and grain refinement.https://doi.org/10.1088/2053-1591/abced9aluminum foilaccumulative roll bonding (ARB)mechanical propertiessemforming limit diagram (FLD) |
| spellingShingle | E A Alisaraei R Hashemi D Rahmatabadi C Sommitsch Experimental study of forming limit diagram and mechanical properties of aluminum foils processed by the accumulative roll bonding Materials Research Express aluminum foil accumulative roll bonding (ARB) mechanical properties sem forming limit diagram (FLD) |
| title | Experimental study of forming limit diagram and mechanical properties of aluminum foils processed by the accumulative roll bonding |
| title_full | Experimental study of forming limit diagram and mechanical properties of aluminum foils processed by the accumulative roll bonding |
| title_fullStr | Experimental study of forming limit diagram and mechanical properties of aluminum foils processed by the accumulative roll bonding |
| title_full_unstemmed | Experimental study of forming limit diagram and mechanical properties of aluminum foils processed by the accumulative roll bonding |
| title_short | Experimental study of forming limit diagram and mechanical properties of aluminum foils processed by the accumulative roll bonding |
| title_sort | experimental study of forming limit diagram and mechanical properties of aluminum foils processed by the accumulative roll bonding |
| topic | aluminum foil accumulative roll bonding (ARB) mechanical properties sem forming limit diagram (FLD) |
| url | https://doi.org/10.1088/2053-1591/abced9 |
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