Experimental study of forming limit diagram and mechanical properties of aluminum foils processed by the accumulative roll bonding

E. A. Alisaraei, R. Hashemi*, D. Rahmatabadi, C. Sommitsch

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Article number126511
JournalMaterials Research Express
Issue number12
Publication statusPublished - Dec 2020


  • Accumulative roll bonding (ARB)
  • Aluminum foil
  • Forming limit diagram (FLD)
  • Mechanical properties
  • Sem

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Metals and Alloys

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