Deformation Induced Percolating Porosity In High Pressure Torsioned (HPT) Copper

Matthias Wegner; Jörn Leuthold; Sergiy V. Divinski; Daria Setman; Michael J. Zehetbauer; Gerhard Wilde

doi:10.4028/www.scientific.net/MSF.702-703.105

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HomeMaterials Science ForumMaterials Science Forum Vols. 702-703Deformation Induced Percolating Porosity In High...

Deformation Induced Percolating Porosity In High Pressure Torsioned (HPT) Copper

Abstract:

Copper of different purity levels (4N, 5N) produced by High Pressure Torsion (HPT) with varying processing parameters is investigated utilizing the radiotracer technique. While the degree of deformation is constant, the effect of the applied quasi-hydrostatic pressure and of the impurity concentration on the as deformed samples is analysed. By applying the radio tracer method micro structural aspects are revealed that are not easily accessible by conventional methods. The measurements indicate the formation of a percolating porosity during the HPT process as a function of the applied pressure and (although less pronounced) of the impurity concentration.

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Periodical:

Materials Science Forum (Volumes 702-703)

Pages:

105-108

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.702-703.105

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Online since:

December 2011

Authors:

Matthias Wegner, Jörn Leuthold, Sergiy V. Divinski, Daria Setman, Michael J. Zehetbauer, Gerhard Wilde

Keywords:

Copper, High Pressure Torsion (HPT), HPT, Percolating Porosity, Radio Tracer Diffusion, Severe Plastic Deformation (SPD)

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