Abstract
Stress-strain curves have been obtained for the superplastically deformed Al-Cu eutectic tested in tension under constant true strain-rate conditions. It is shown that constant flow stress conditions do not obtain and that, after an initial transient, the flow stress is linearly related to natural tensile strain. Optical metallography has been employed to follow the variation of both inter-phase particle separation and α-Al grain size with strain and it is concluded that the observed strain hardening is due mainly to grain coarsening.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
W. A. Backofen, I. R. Turner, and D. H. Avery, Trans. Amer. Soc. Metals 57 (1964) 980.
D. H. Avery and W. A. Backofen, ibid 58 (1965) 551.
P. J. Martin and W. A. Backofen, ibid 60 (1967) 353.
T. H. Alden, Acta Metallurgica 15 (1967) 469.
D. Lee and W. A. Backofen, Trans. A.I.M.E. 239 (1967) 1034.
T. H. Alden, Trans. Amer. Soc. Metals 61 (1968) 559.
W. Zehr and W. A. Backofen, ibid 61 (1968) 300.
A. Karim and W. A. Backofen, Mat. Sci. Eng. 3 (1968/69) 306.
D. L. Holt, Trans. A.I.M.E. 242 (1968) 25.
A. Ball and M. M. Hutchison, Met. Sci. J. 3 (1969) 1.
H. W. Hayden and J. H. Brophy, Trans. Amer. Soc. Metals 61 (1968) 542.
W. B. Morrison, ibid 61 (1968) 423.
R. Kossowsky and J. H. Bechtold, Trans. A.I.M.E. 242 (1968) 717.
M. J. Stowell, J. L. Robertson, and B. M. Watts, Met. Sci. J. 3 (1969) 41.
D. L. Holt and W. A. Backofen, Trans. Amer. Soc. Metals 59 (1966) 755.
J. H. Hensler, J. Inst. Metals 96 (1968) 190.
W. B. Morrison, Trans. A.I.M.E. 242 (1968) 2221.
J. Hedworth and M. J. Stowell, to be published.
R. J. Lindinger, R. C. Gibson, and J. H. Brophy, Trans. Amer. Soc. Metals 62 (1969) 231.
G. Mima, T. Yamane, and C. Hayashi, J. Jap. Inst. Metals 32 (1968) 224.
G. Beghi, R. Matera, and G. Piatti, J. Mater. Sci. 5 (1970) 820.
E. P. Lautenschlager and J. O. Brittain, Rev. Sci. Instr. 39 (1968) 1563.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Watts, B.M., Stowell, M.J. & Cottingham, D.M. The variation in flow stress and microstructure during superplastic deformation of the Al-Cu eutectic. J Mater Sci 6, 228–237 (1971). https://doi.org/10.1007/BF00550018
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00550018