Fabrication of a W-25%Cu Nanocomposite by High Pressure Torsion

I. Sabirov; Thomas Schöberl; Reinhard Pippan

doi:10.4028/www.scientific.net/MSF.503-504.561

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HomeMaterials Science ForumMaterials Science Forum Vols. 503-504Fabrication of a W-25%Cu Nanocomposite by High...

Fabrication of a W-25%Cu Nanocomposite by High Pressure Torsion

Abstract:

A coarse-grained W-25%Cu composite with a tungsten particle size between 2 and 10 μm is subjected to high pressure torsion (HPT) at room temperature to different strains. The evolution of microstructure with increasing strain is studied. At low strains (εeq ≤ 16), an inhomogeneous deformation of the material is found. This inhomogeneity is studied in detail by nanoindentation experiments. At larger strains (εeq ≥ 16), a fragmentation of tungsten particles is observed. The specimen deformed to a strain of 256 exhibits a homogeneous microstructure with a tungsten particle size between 10 and 20 nm. A further increase of strain does not cause a further significant tungsten particle refinement. A possibility of industrial application of HPT to produce nanocomposite materials is discussed.

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Periodical:

Materials Science Forum (Volumes 503-504)

Pages:

561-566

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.503-504.561

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Online since:

January 2006

Authors:

I. Sabirov, Thomas Schöberl, Reinhard Pippan

Keywords:

High Pressure Torsion (HPT), Nanocomposite, Tungsten Fragmentation, W-Cu Alloys

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References

[1] S.C. Tjong, H. Chen: Mater Sci Engng. Vol. R45 (2004) 1-88.

Google Scholar

[2] J.C. Kim, I.C.H. Moon: Nanostr Mater. Vol. 10 (1998) 283-290.

Google Scholar

[3] J.C. Kim, S.S. Ryu, Y.D. Kim, I.C.H. Moon: Scripta Mater. Vol. 39 (1998) 669-676.

Google Scholar

[4] B.K. Kim, C.J. Choi: Scripta Mater. Vol. 44 (2001) 2161-2164.

Google Scholar

[5] R.Z. Valiev, R.K. Islamgaliev, I.V. Alexandrov: Progr Mater Sci. Vol. 45 (2000) 103-189.

Google Scholar

[6] T. Schöberl, I. Sabirov, R. Pippan: In Proc. of First Vienna International Conference Micro- and Nanotechnology, Vienna, Austria, 2005 (in press).

Google Scholar

[7] W.C. Oliver, G.M. Pharr: J. Mater. Res. Vol. 7 (1992) 1564-1583.

Google Scholar

[8] T. Hebesberger, H.P. Stüwe, A. Vorhauer, F. Wetscher, R. Pippan: Acta Mater. Vol. 53 (2005) 393-402.

DOI: 10.1016/j.actamat.2004.09.043

Google Scholar

[9] Z. Wang, T.K. Chen, D.J. Lloyd: Metall Trans. Vol. 24 (1993) 197-206.

Google Scholar

[10] Application for a patent [Austria, 2. 2005].

Google Scholar

[11] Y.T. Zhu, T.C. Lowe, T.G. Langdon: Scripta Mater. Vol. 51 (2004) 825-830.

Google Scholar

[12] C. Zweben: J Mater. Vol. 7 (1992) 15-23.

Google Scholar