Advertisement

Journal of Materials Science

, Volume 15, Issue 10, pp 2550–2558 | Cite as

Effect of orientation on work softening in aluminum single crystals

  • S. Miura
  • K. Hamashima
Papers

Abstract

A single crystal of aluminum, prestrained at low temperature, exhibits a yield drop when it is deformed at a sufficiently higher temperature and this phenomenon has been termed the work softening. In this study, three types of aluminum single crystals with various tensile orientations were stretched at 77 K and 293 K, to clarify the effect of orientation on this work softening phenomenon. The single crystal orientated for single slip shows work softening when deformed at 293 K after prestraining satisfactorily at 77 K. In the deformation of this crystal at 293 K, a coarse slip accompanied by an intimate cross slip, was observed. The single crystal orientated along 〈1 0 0〉 also shows work softening at 293 K after giving moderate elongation at 77 K and a clustered slip accompanied by a prominent cross slip was observed in the deformation at 293 K. However, in the deformation of the single crystal orientated along 〈1 1 1〉 at 293 K, only a fine triple slip was observed and work softening was not observed even when prestrained to a large strain at 77 K. It is thought that the work softening found at 293 K after prestrain at 77 K is associated with the occurrence and propagation of coarse slip accompanied by cross slip.

Keywords

Polymer Aluminum Large Strain Cross Slip Yield Drop 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    R. J. Stokes and A. H. Cottrell, Acta Met. 2 (1954) 342.Google Scholar
  2. 2.
    A. H. Cottrell and R. J. Stokes, Proc. Roy. Soc. A233 (1956) 17.Google Scholar
  3. 3.
    S. Sakui, T. Mori and K. Sato, J. Japan Inst. Metal. 30 (1966) 412.Google Scholar
  4. 4.
    S. Sakui, B. Kakuma, T. Mori and K. Sato, J. Japan Inst. Metal. 30 (1966) 493.Google Scholar
  5. 5.
    F. H. Hammad, C. H. Ahlquist and W. D. Nix, Metal. Trans. 1 (1970) 2179.Google Scholar
  6. 6.
    S. Kashihara, Y. Terasawa, H. Uchida and I. Yamada, Preprint of the 81st Meeting of Japan Inst. of Metals, Hiroshima, (1977) p. 329.Google Scholar
  7. 7.
    P. Haasen and A. Kelly, Acta Met. 5 (1957) 192.Google Scholar
  8. 8.
    M. J. Makin, Phil. Mag. 3 (1958) 287.Google Scholar
  9. 9.
    S. Miura and K. Hamashima, J. Soc. Mater. Sci. Japan 29 (1980) 57.Google Scholar
  10. 10.
    Y. Saeki and S. Miura, Trans. Japan Inst. Metal. 18 (1977) 843.Google Scholar
  11. 11.
    S. Miura, J. Takamura and N. Narita, Supplement Trans. Japan Inst. Metal. 9 (1968) 555.Google Scholar

Copyright information

© Chapman and Hall Ltd. 1980

Authors and Affiliations

  • S. Miura
    • 1
  • K. Hamashima
    • 2
  1. 1.Department of Engineering Science, Faculty of EngineeringKyoto UniversityKyotoJapan
  2. 2.Department of Mechanical Engineering, Faculty of EngineeringDoshisha UniversityKyotoJapan

Personalised recommendations