Fundamentals of Creep in Aluminum Over a Very Wide Temperature Range

  • Michael E. KassnerEmail author
  • Kamia K. Smith
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)


Some of the earliest characterization of steady-state creep in aluminum, was developed at UC Berkeley by John Dorn, his students and postdoctoral scholars, one being K.L. Murty. Research of the group included classic five power-law creep, Harper-Dorn creep, power-law breakdown and viscous glide. Many of the models and theories persisted for a relatively long period of time due to the thoughtfulness of the work. This paper discusses the more recent developments in these phenomena that may lead to new interpretations in aluminum creep, as well as other crystalline materials.


Power-law creep Power-law breakdown Harper-Dorn creep Low-temperature creep 



Support from the University of Southern California through the Choong Hoon Cho Chair is gratefully acknowledged.


  1. 1.
    F.H. Norton, Creep of Steel at High Temperatures (McGraw Hill, New York, NY, 1929), pp. 1–116Google Scholar
  2. 2.
    F.A. Mohamed, T.G. Langdon, The transition from dislocation climb to viscous glide in creep of solid solution alloys. Acta Metall. 22(6), 779–788 (1974)CrossRefGoogle Scholar
  3. 3.
    L.I. Ivanov, V.A. Yanushkevich, The mechanism of fatigue creep of body-centered cubic metals. Fiz. Metal. Metal. 17, 112–117 (1964)Google Scholar
  4. 4.
    M.E. Kassner, Taylor hardening in five power law creep of metals and class M alloys. Acta Mater. 52, 1–9 (2004)CrossRefGoogle Scholar
  5. 5.
    M.E. Kassner et al., Dislocation microstructures and internal stress measurements by CBED on creep deformed Cu and Al. Metall. Mat. Trans. 33A, 311–318 (2002)CrossRefGoogle Scholar
  6. 6.
    M.E. Kassner, P. Geantil, L.E. Levine, Long-range internal stresses in single phase crystalline materials. Int. J. Plast. 45, 44–60 (2013)CrossRefGoogle Scholar
  7. 7.
    T.Q. Phan et al., Synchrotron X-Ray microbeam diffraction measurements of full elastic long range internal strain and stress tensors in commercial-purity aluminum processed by multiple passes of equal-channel angular pressing. Acta Mater. 112, 231–241 (2016)CrossRefGoogle Scholar
  8. 8.
    S. Straub, W. Blum, Does the ‘natural’ third power law of steady state creep hold for pure aluminum? Scr. Metall. Mater. 24(10), 1837–1842 (1990)CrossRefGoogle Scholar
  9. 9.
    H. Luthy, A.K. Miller, O.D. Sherby, The stress and temperature dependence of steady-state flow at intermediate temperatures for polycrystalline aluminum. Acta Metall. 28, 169–178 (1980)CrossRefGoogle Scholar
  10. 10.
    M.E. Kassner et al., Restoration mechanisms in large-strain deformation of high purity aluminum at ambient-temperature, and the determination of the existence of a steady-state. Acta Metall. Mater. 42, 3223–3230 (1994)CrossRefGoogle Scholar
  11. 11.
    M.E. Kassner, K. Smith, C.S. Campbell, Low-temperature creep in metals and alloys. J. Mat. Sci. 50, 6539–6551 (2015)CrossRefGoogle Scholar
  12. 12.
    W. Blum, W. Maier, Harper-dorn creep—a myth? Phys. Status Solidi A 171(2), 467–474 (1999)CrossRefGoogle Scholar
  13. 13.
    P. Kumar, M.E. Kassner, Theory for very low stress (‘harper-dorn’) creep. Scripta Mater. 60, 60–63 (2009)CrossRefGoogle Scholar
  14. 14.
    M.E. Kassner, P. Kumar, W. Blum, Harper-dorn creep. Int. J. Plast. 23, 980–1000 (2007)CrossRefGoogle Scholar
  15. 15.
    P. Kumar et al., New experiments and insights on creep at low stress levels. Mat. Sci. Eng. A 510–511, 20–24 (2009)CrossRefGoogle Scholar
  16. 16.
    A.J. Ardell, Harper-dorn creep—predictions of the dislocation network theory of high temperature deformation. Acta Mater. 45(7), 2971–2981 (1997)CrossRefGoogle Scholar
  17. 17.
    S.P. Singh, Creep behavior of lif single crystal and Cu-Bi alloy. M.S. Thesis, Indian Institute of Science, Bangalore, India, 2015Google Scholar
  18. 18.
    M.E. Kassner, Fundamentals of Creep in Metals and Alloys, 3rd edn. (Elsevier, 2015), pp. 1–338Google Scholar
  19. 19.
    K.K. Smith, M.E. Kassner, P. Kumar, Long-term annealing of aluminum single crystals with insight into harper-dorn creep, Encyclopedia of Aluminum and Its Alloys (submitted/in review 2016)Google Scholar
  20. 20.
    K.L. Murty, F.A. Mohamed, J.E. Dorn, Viscous glide, dislocation climb and Newtonian deformation mechanisms of high-temperature creep in Al-3Mg. Acta Metall. 20(8), 1009–1018 (1972)CrossRefGoogle Scholar
  21. 21.
    K.L. Murty, Transitional creep mechanisms in Al-5 Mg at high stresses. Scr. Metall. 7(9), 899–903 (1973)CrossRefGoogle Scholar

Copyright information

© The Minerals, Metals & Materials Society 2017

Authors and Affiliations

  1. 1.University of Southern CaliforniaLos AngelesUSA

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