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In Situ Observation of Adiabatic Shear Band Formation in Aluminum Alloys

  • Y. NieEmail author
  • B. Claus
  • J. Gao
  • X. Zhai
  • N. Kedir
  • J. Chu
  • T. Sun
  • K. Fezzaa
  • W. W. Chen
Research paper
  • 152 Downloads

Abstract

We used high-speed X-ray phase contrast imaging and infrared thermal imaging techniques to study the formation processes of adiabatic shear bands in aluminum 7075-T6 and 6061-T6 alloys. A modified compression Kolsky bar setup was used to apply the dynamic loading. A flat hat-shaped specimen design was adopted for generating the shear bands at the designated locations. Experimental results show that 7075-T6 exhibits less ductility and a narrower shear band than 6061-T6. Maximum temperatures of 720 K and 770 K were locally determined within the shear band zones for 7075-T6 and 6061-T6 respectively. This local high temperature zone and the resulting thermal instability were found to relate to the shear band formation in these aluminum alloys.

Keywords

Shear band formation Dynamic shear banding Kolsky Bar X-ray PCI Temperature Aluminum alloys 

Notes

Acknowledgements

This material is based upon work supported in part by the U. S. Army Research Laboratory and the U. S. Army Research Office under grant number W911NF1710241. The authors also sincerely thank Alex Deriy at the APS for his professional help during our beam time, and Aaron Greco at Argonne for his cooperation in using the IR camera. This research used resources of the Advanced Photon Source, a US Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. Funding for high-speed camera used in this work was provided by AFOSR Award No. FA9550-16-1-0315 (Dr. Martin Schmidt, Program Officer).

References

  1. 1.
    Zener C, Hollomon JH (1944) Effect of strain rate upon plastic flow of steel. J Appl Phys 15(1):22–32CrossRefGoogle Scholar
  2. 2.
    Li DH, Yang Y, Xu T, Zheng HG, Zhu QS, Zhang QM (2010) Observation of the microstructure in the adiabatic shear band of 7075 aluminum alloy. Mater Sci Eng A 527(15):3529–3535CrossRefGoogle Scholar
  3. 3.
    Timothy SP (1987) The structure of adiabatic shear bands in metals: a critical review. Acta Metall 35(2):301–306CrossRefGoogle Scholar
  4. 4.
    Xu Y, Zhang J, Bai Y, Meyers MA (2008) Shear localization in dynamic deformation: microstructural evolution. Metall Mater Trans A 39(4):811–843CrossRefGoogle Scholar
  5. 5.
    Dodd B, Bai Y (eds) (2012) Adiabatic shear localization: frontiers and advances, Elsevier, AmsterdamGoogle Scholar
  6. 6.
    da Luz FS, Junior L, Pereira E, Louro LHL, Monteiro SN (2015) Ballistic test of multilayered armor with intermediate epoxy composite reinforced with jute fabric. Mater Res 18:170–177CrossRefGoogle Scholar
  7. 7.
    Leech PW (1985) Observations of adiabatic shear band formation in 7039 aluminum alloy. Metall Trans A 16(10):1900–1903CrossRefGoogle Scholar
  8. 8.
    Owolabi GM, Odeshi AG, Singh MNK, Bassim MN (2007) Dynamic shear band formation in aluminum 6061-T6 and aluminum 6061-T6/Al2O3 composites. Mater Sci Eng A 457(1–2):114–119CrossRefGoogle Scholar
  9. 9.
    Hartley KA, Duffy J, Hawley RH (1986) Measurement of the temperature profile during shear band formation in steels deforming at high strain rates. Brown Univ Providence Ri Div Of EngineeringGoogle Scholar
  10. 10.
    Duffy J, Chi YC (1992) On the measurement of local strain and temperature during the formation of adiabatic shear bands. Mater Sci Eng A 157(2):195–210CrossRefGoogle Scholar
  11. 11.
    Marchand A, Duffy J (1988) An experimental study of the formation process of adiabatic shear bands in a structural steel. Journal of the Mechanics and Physics of Solids 36(3):251–283CrossRefGoogle Scholar
  12. 12.
    Zhou M, Rosakis AJ, Ravichandran G (1996) Dynamically propagating shear bands in impact-loaded prenotched plates—I. experimental investigations of temperature signatures and propagation speed. Journal of the Mechanics and Physics of Solids 44(6):981–1006CrossRefGoogle Scholar
  13. 13.
    Mercier S, Molinari A (1998) Steady-state shear band propagation under dynamic conditions. Journal of the Mechanics and Physics of Solids 46(8):1463–1495MathSciNetCrossRefGoogle Scholar
  14. 14.
    Guduru PR, Rosakis AJ, Ravichandran G (2001) Dynamic shear bands: an investigation using high speed optical and infrared diagnostics. Mech Mater 33(7):371–402CrossRefGoogle Scholar
  15. 15.
    Guo Y, Ruan Q, Zhu S, Wei Q, Chen H, Jianan L, Bo H, Xihui W, Li Y, Fang D (2019) Temperature rise associated with adiabatic shear band: causality clarified. Phys Rev Lett 122(1):015503CrossRefGoogle Scholar
  16. 16.
    Hudspeth M, Claus B, Dubelman S, Black J, Mondal A, Parab N, Funnell C, Hai F, Qi ML, Fezzaa K, Luo SN (2013) High speed synchrotron X-ray phase contrast imaging of dynamic material response to split Hopkinson bar loading. Rev Sci Instrum 84(2):025102CrossRefGoogle Scholar
  17. 17.
    Parab ND, Black JT, Claus B, Hudspeth M, Sun J, Fezzaa K, Chen WW (2014) Observation of crack propagation in glass using X-ray phase contrast imaging. Int J Appl Glas Sci 5(4):363–373CrossRefGoogle Scholar
  18. 18.
    Meyer LW, Staskewitsch E, Burblies A (1994) Adiabatic shear failure under biaxial dynamic compression/shear loading. Mech Mater 17(2–3):203–214CrossRefGoogle Scholar
  19. 19.
    Hartmann K-H, Kunze H-D, Meyer LW (1981) Metallurgical effects on impact loaded materials, Shock waves and high-strain-rate phenomena in metals. Springer, Boston, pp 325–337Google Scholar
  20. 20.
    Chen RW, Vecchio KS (1994) Microstructural characterization of shear band formation in Al-Li alloys. Le Journal de Physique IV 4(C8, C8):–459Google Scholar
  21. 21.
    Beatty JH, Meyer LW, Meyers MA, Nemat-Nasser S (1990) Formation of controlled adiabatic shear bands in AISI 4340 high strength steel. no. MTL-TR-90-54. Army Lab Command Watertown Ma Material Technology LabGoogle Scholar
  22. 22.
    Meyers MA, Subhash G, Kad BK, Prasad L (1994) Evolution of microstructure and shear-band formation in α-hcp titanium. Mech Mater 17(2–3):175–193CrossRefGoogle Scholar
  23. 23.
    Xue Q (2001) Spatial evolution of adiabatic shear localization in stainless steel, titanium, and Ti-6A1-4V alloy. University of California, San DiegoGoogle Scholar
  24. 24.
    Meyer LW, Krüger L (2000) Shear testing with hat specimen. ASM handbook, mechanical testing and evaluation, ASM international, materials park, Ohio 8: 451–452Google Scholar
  25. 25.
    Wen C-D, Mudawar I (2005) Emissivity characteristics of polished aluminum alloy surfaces and assessment of multispectral radiation thermometry (MRT) emissivity models. Int J Heat Mass Transf 48(7):1316–1329CrossRefGoogle Scholar
  26. 26.
    Mills KC (2002) Recommended values of thermophysical properties for selected commercial alloys. Woodhead Publishing, CambridgeCrossRefGoogle Scholar

Copyright information

© Society for Experimental Mechanics 2019

Authors and Affiliations

  1. 1.School of Aeronautics and AstronauticsPurdue UniversityWest LafayetteUSA
  2. 2.School of Materials EngineeringPurdue UniversityWest LafayetteUSA
  3. 3.Advanced Photon Source, Argonne National LaboratoryLemontUSA

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