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Investigation of Grain Refinement Mechanism of Nickel Single Crystal during High Pressure Torsion by Crystal Plasticity Modeling. [PDF]

Materials (Basel), 2019
Wei P, Zhou H, Liu H, Zhu C, Wang W, Deng G.   +5 more
europepmc   +1 more source

High-pressure torsion of hafnium

High-pressure torsion of hafnium
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Continuous high-pressure torsion

Continuous high-pressure torsion
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Continuous high-pressure torsion using wires

Continuous high-pressure torsion using wires
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The significance of slippage in processing by high-pressure torsion

The significance of slippage in processing by high-pressure torsion
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On the homogeneity of deformation by high pressure torsion

Scripta Materialia, 2004
Abstract Microstructures and microhardness have been carefully characterized for an austenitic steel deformed by High Pressure Torsion up to 16 total revolutions. A nearly idealized torsion deformation is observed even at large number of revolution.
Reinhard Pippan
exaly   +2 more sources

Modeling the temperature rise in high-pressure torsion

Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2014
Experiments and finite element modeling were used to estimate the temperature rise during high-pressure torsion. The results show the temperature rise is dependent upon the material strength, the rotation rate, the sample radius, the heat capacity and the volume of the anvils.
Yi Huang, Roberto Figueiredo, Terence Langdon   +2 more
exaly   +3 more sources

The evolution of homogeneity in processing by high-pressure torsion

Acta Materialia, 2007
Disks of high-purity aluminum were processed by high-pressure torsion (HPT) at room temperature under different conditions of imposed pressure and numbers of turns. Measurements were taken of the microhardness values both along diameters in each disk and following a rectilinear grid pattern to give color-coded maps of the hardness distributions.
Cheng Xu, Terence Langdon, Zenji Horita   +2 more
exaly   +3 more sources

Evaluating the influence of pressure and torsional strain on processing by high-pressure torsion

Journal of Materials Science, 2008
Tests were conducted on an Al-6061 alloy to evaluate the separate effects of the applied pressure and the torsional straining in processing by high-pressure torsion (HPT). The values of the Vickers microhardness were measured after processing and plotted both linearly across the diameters of the disks and as three-dimensional representations.
Xu, Cheng, Horita, Zenji, Langdon, Terence G.   +2 more
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Strengthening of Nickel Deformed by High Pressure Torsion

Materials Science Forum, 2008
The strength of a deformed metal depends on the content of high angle boundaries, low angle dislocation boundaries and the dislocations between the boundaries. High angle boundaries contribute by Hall-Petch strengthening, whereas for the low angle dislocation boundaries and dislocations between boundaries the strengthening is proportional to the square
Zhang, H.W., Huang, Xiaoxu, Hansen, Niels, Pippan, Reinhard, Zehetbauer, Michael   +4 more
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