Measures of Ductility for UFG Materials Obtained by SPD


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It is shown that for ultrafine grained materials obtained with severe plastic deformation methods, the value of elongation up to fracture does not determine ductility, while the reduction of area up to fracture does determine it. The latter characteristic gives information about how an alloy structure resists the formation of discontinuity flaws under deformation in a hard stress state. We show that for a commercial grade titanium that underwent Twist Extrusion (TE), the value of , and thus ductility, is higher in the UFG state than in the coarse-grained state.



Materials Science Forum (Volumes 633-634)

Edited by:

Yonghao Zhao and Xiaozhou Liao






Y. Beygelzimer et al., "Measures of Ductility for UFG Materials Obtained by SPD", Materials Science Forum, Vols. 633-634, pp. 223-230, 2010

Online since:

November 2009




[1] V.L. Kolmogorov: J. Mater. Process. Technol. Vol. 70 (1997) pp.190-193.

[2] Y.E. Beygelzimer, B.M. Efros, V.N. Varyukhin and A.V. Khokhlov: Engineering Fracture Mechanics Vol. 48, 5 (1994) pp.629-640.

[3] A.G. Atkins: J. of Mater. Proc. Tech. 56 (1996) pp.609-618.

[4] R. Hill: The Mathematical Theory of Plasticity (Oxford University Press 1998).

[5] J.R. Rice, in: Theoretical and Applied Mechanics (Proceedings of the 14th International Congress on Theoretical and Applied Mechanics), edtied by W.T. Koiter / North-Holland Publishing Co., Delft, Vol. 1 (1976) pp.207-220.

[6] F.A. McClintock, A.S. Argon: Mechanical Behavior of Materials (Massachusetts, USA, (1966).

[7] P.W. Bridgman: Studies in Large Plastic Flow and Fracture (NY, 1952).

[8] Y.Y. Beygelzimer, O.V. Prokof'eva and V.N. Varyukhin: Russ. Metall. (Metally) Vol. 1 (2006), pp.25-32.

[9] Y. Beygelzimer: Mechanics of Materials Vol. 37, 7, (2005) pp.753-767.

[10] Y. Beygelzimer, A. Reshetov, S. Synkov, O. Prokof'eva and R. Kulagin: J. Mater. Proc. Tech. DOI 10. 1016/j. jmatprotec. 2008. 08. 022.

[11] V.V. Stolyarov, Ya.E. Beigel'zimer, D.V. Orlov, and R.Z. Valiev: The Phys. of Metals & Metallogr., Vol. 99, 2, (2005) pp.204-211. (Translated from Fizika Metallov i Metallovedenie).

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