Results 251 to 260 of about 26,411 (278)
The significance of slippage in processing by high-pressure torsion
The significance of slippage in processing by high-pressure torsionopenaire
Some of the next articles are maybe not open access.
Related searches:
Related searches:
On the homogeneity of deformation by high pressure torsion
Scripta Materialia, 2004Abstract 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, 2014Experiments 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 +2 more
exaly +3 more sources
The evolution of homogeneity in processing by high-pressure torsion
Acta Materialia, 2007Disks 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 +2 more
exaly +3 more sources
The dead metal zone in high-pressure torsion [PDF]
Scripta Materialia, 2012 Plastic deformation behavior during high-pressure torsion (HPT) was analyzed by the finite element method in order to investigate heterogeneous deformation in HPT-processed disks. The effective strain and strain rate developed increase from the center to the edge of the HPT-processed disk; however, they decrease to zero at the surface corner of the ...
Lee, DJ, Yoon, EY, Park, LJ, Kim, HS
openaire +3 more sources
Microstructures and Mechanical Properties of Ti-6Al-7Nb Processed by High-pressure Torsion [PDF]
Procedia Engineering, 2014 Ti-6Al-7Nb was deformed by high-pressure torsion to improve the mechanical properties of the alloy. high-pressure torsion was conducted at room temperature under pressures of 2 and 6GPa for disk-shaped specimens.
Yusuke Tsutsumi +2 more
exaly +2 more sources
Bulk nanocrystalline ω-Zr by high-pressure torsion [PDF]
Scripta Materialia, 2008 Pure nanocrystalline Zr with a grain size of 30 nm and a microhardness of 400 HV has been fabricated by high-pressure torsion (HPT) at room temperature using a pressure of 6 GPa and five revolutions in 5 min.
A P Zhilyaev +2 more
exaly +2 more sources
Evaluating the influence of pressure and torsional strain on processing by high-pressure torsion
Journal of Materials Science, 2008Tests 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 +2 more
openaire +2 more sources
Strengthening of Nickel Deformed by High Pressure Torsion
Materials Science Forum, 2008The 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. +4 more
openaire +2 more sources
A detailed model of high pressure torsion
Materials Science and Engineering: A, 2017Abstract High Pressure Torsion (HTP) is a popular physical simulator to produce ultra-fine grained materials. Existing solutions of HPT predict a zero deformation and grain refinement near its sample’s longitudinal axis. However, experimental observations confirm that this is not typically the case.
openaire +1 more source