Advertisement

Microstructural evolution and mechanical properties of ultrafine grained AA2024 processed by accumulative roll bonding

  • Ramin Khatami
  • Arash Fattah-alhosseini
  • Yousef Mazaheri
  • Mohsen K. Keshavarz
  • Meysam Haghshenas
ORIGINAL ARTICLE

Abstract

In this paper, ambient temperature (room temperature) accumulative roll bonding (ARB) is performed on Al2024 aluminum alloys to assess grain refining phenomenon. The microstructural evaluations show reduction in the grain size from about 25 μm to about 350 nm by a factor of ∼70 upon six cycles of ARB; X-ray diffraction patterns were used to assess the increase in the dislocation density. The yield and tensile strength of the ultrafine grained Al2024 after the sixth cycle, 465 and 492 MPa, were about 650 and 186% higher than that of the as-received sample, 62 and 172 MPa, respectively. Investigating the fractured surfaces of the tensile test specimens by scanning electron microscopy showed that ARB process alters the mode of fracture substantially; fracture surface of annealed sample consists of deep equiaxed dimples which is an indication of ductile fracture. However, this changes in the ARBed specimens to shear ductile rupture with shallow and small elongated dimples.

Keywords

Al2024 Accumulative roll bonding X-ray diffraction Mechanical properties 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Merklein M (2006) Charakterisierung von Blechwerkstoffen für den Leichtbau. Maisenbach Verlag, BambergGoogle Scholar
  2. 2.
    AluMatter (2008) www.aluminium.matter.org.uk
  3. 3.
    Horita Z 2005 Proc. of the 3rd Int. Conf. on Nanomaterials by Severe Plastic Deformation, Trans. Tech. Publications. LtdGoogle Scholar
  4. 4.
    Valiev RZ (2004) Nanostructuring of metals by severe plastic deformation for advanced properties. Nature Mater 3:511–515Google Scholar
  5. 5.
    Saito Y, Tsuji N, Utsunomiya H, Sakai T, Hong RG (1998) Ultra-fine grained bulk aluminum produced by accumulative rollbonding (ARB) process. Scr Mater 39:1221–1227Google Scholar
  6. 6.
    Saito Y, Utsunomiya H, Tsuji N, Sakai T (1999) Novel ultra-high straining process for bulk materials development of the accumulative roll-bonding (ARB) process. Acta Mater 47:579–583Google Scholar
  7. 7.
    Gashti SO, Fattah-alhosseini A, Mazaheri Y, Keshavarz MK (2016) Effects of grain size and dislocation density on strain hardening behavior of ultrafine grained AA1050 processed by accumulative roll bonding. J Alloys Compd 658:854–861Google Scholar
  8. 8.
    Fattah-alhosseini A, Imantalab O, Mazaheri Y, Keshavarz MK (2016) Microstructural evolution, mechanical properties, and strain hardening behavior of ultrafine grained commercial pure copper during the accumulative roll bonding process. Mater Sci Eng A 650:8–14Google Scholar
  9. 9.
    Zheng R, Bhattacharjee T, Shibata A, Tsuji N, Ma C (2016) Effect of Accumulative Roll Bonding (ARB) and Subsequent Aging on Microstructure and Mechanical Properties of 2024 Al Alloy. Mater Trans 57:1462–1470Google Scholar
  10. 10.
    Tsuji N, Saito Y, Lee SH, Minamino Y (2003) ARB (accumulative roll bonding) and other new techniques to produce bulk ultrafine grained material. Adv Eng Mater 5:338–344Google Scholar
  11. 11.
    Ungar T, Gubicza J, Ribarik G, Borbely A (2001) Crystallite size distribution and dislocation structure determined by diffraction profile analysis: principles and practical application to cubic and hexagonal crystals. J Appl Crystallogr 34:298–310Google Scholar
  12. 12.
    Li B, Tsuji N, Minamino Y (2006) Microstructural Evolution in 36%Ni Austenitic Steel during ARB Process. Mater Sci Forum 512:73–77Google Scholar
  13. 13.
    Xing ZP, Kang SB, Kim HW (2006) Microstructural evolution and mechanical properties of the AA8011 alloy during the accumulative roll-bonding process. Metall Mater Trans A 33:1521–1530Google Scholar
  14. 14.
    Eizadjou M, Danesh Manesh H, Janghorban K (2009) Microstructure and mechanical properties of ultra-fine grains (UFGs) aluminum strips produced by ARB process. J Alloys Compd 474:406–415Google Scholar
  15. 15.
    Gashti SO, Fattah-alhosseini A, Mazaheri Y, Keshavarz MK (2016) Microstructure, mechanical properties and electrochemical behavior of AA1050 processed by accumulative roll bonding (ARB). J Alloys Compd 688:44–55Google Scholar
  16. 16.
    Kim HS, Yoo SJ, Ahn JW, Kim DH, Kim WJ (2011) Ultrafine grained titanium sheets with high strength and high corrosion resistance. Mater Sci Eng A 528:8479–8485Google Scholar
  17. 17.
    Toroghinejad MR, Ashrafizadeh F, JamAlti R (2013) On the use of accumulative roll bonding process to develop nanostructured aluminum alloy 5083. Mater Sci Eng A 561:145–151Google Scholar
  18. 18.
    Raei M, Toroghinejad MR, JamAlti R (2011) Effect of ARB process on textural evolution of AA1100 aluminum alloy. Mater Manufac Process 26:1352–1356Google Scholar
  19. 19.
    Su L, Lu C, Li H, Deng G, Tieu K (2014) Investigation of ultrafine grained AA1050 fabricated by accumulative roll bonding. Mater Sci Eng A 614:148–155Google Scholar
  20. 20.
    Kwan C, Wang ZR, Kang SB (2008) Mechanical behavior and microstructural evolution upon annealing of the accumulative roll-bonding (ARB) processed Al alloy 1100. Mater Sci Eng A 480:148–159Google Scholar
  21. 21.
    Tsuji N, Ito Y, Saito Y, Minamino Y (2002) Strength and ductility of ultrafine grained aluminum and iron produced by ARB and annealing. Scr Mater 47:893–899Google Scholar
  22. 22.
    Lee SH, Saito Y, Sakai T, Utsunomiya H (2002) Microstructures and mechanical properties of 6061 aluminum alloy processed by accumulative roll-bonding. Mater Sci Eng A 325:228–235Google Scholar
  23. 23.
    Xing ZP, Kang SB, Kim HW (2001) Softening behavior of 8011 alloy produced by accumulative roll bonding process. Scr Mater 45:597–604Google Scholar
  24. 24.
    Slamova M, Homola P, Slama P, Karlik M, Cieslar M, Ohara Y, Tsuji N (2006) Accumulative Roll Bonding of AA8006, AA8011 and AA5754 Sheets. Mater Sci Forum 519-521:1227–1232Google Scholar
  25. 25.
    Meyers MA, Mishra A, Benson DJ (2006) Mechanical properties of nanocrystalline materials. Prog Mater Sci 51:427–556Google Scholar
  26. 26.
    Pasebani S, Toroghinejad MR (2010) Nano-grained 70/30 brass strip produced by accumulative rollbonding (ARB) process. Mater Sci Eng A 527:491–497Google Scholar
  27. 27.
    ShAlrbaf M, Toroghinejad MR (2008) Nano-grained copper strip produced by accumulative roll bonding process. Mater Sci Eng A 473:28–33Google Scholar

Copyright information

© Springer-Verlag London 2017

Authors and Affiliations

  • Ramin Khatami
    • 1
  • Arash Fattah-alhosseini
    • 1
  • Yousef Mazaheri
    • 1
  • Mohsen K. Keshavarz
    • 2
  • Meysam Haghshenas
    • 3
  1. 1.Department of Materials EngineeringBu-Ali Sina UniversityHamedanIran
  2. 2.Department of Mining and Materials EngineeringMcGill UniversityMontrealCanada
  3. 3.Department of Mechanical EngineeringUniversity of North DakotaGrand ForksUSA

Personalised recommendations