Continuous high-pressure torsion using wires
نویسندگان
چکیده
منابع مشابه
Numerical Analysis of Severe Plastic Deformation by High Pressure Torsion
High-pressure torsion (HPT) is a metal processing method in which the sample is subjected to a very high plastic shear deformation. This process can produce exceptional levels of grain refinement, and provides a corresponding improvement in mechanical properties. To investigate the stress and strain distribution due to HPT process finite element simulation were conducted to investigate effectiv...
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Several hydrogenation reactions involving O-debenzylations, aromatic nitro group reductions and reductive dethionations were investigated under continuous flow conditions in a novel, laboratory scale hydrogenation device that combines endogeneous hydrogen generation and heterogeneous Pd/C or Raney-Ni catalyst cartridges. The hydrogenation of organic compounds through addition and/or hydrogenoly...
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We report a dramatic and irreversible reduction in the lattice thermal conductivity of bulk crystalline silicon when subjected to intense plastic strain under a pressure of 24 GPa using high-pressure torsion (HPT). Thermal conductivity of the HPT-processed samples were measured using picosecond time domain thermoreflectance. Thermal conductivity measurements show that the HPT-processed samples ...
متن کاملThe self-similarity theory of high pressure torsion
By analyzing the problem of high pressure torsion (HPT) in the rigid plastic formulation, we show that the power hardening law of plastically deformed materials leads to self-similarity of HPT, admitting a simple mathematical description of the process. The analysis shows that the main parameters of HPT are proportional to β q , with β being the angle of the anvil rotation. The meaning of the p...
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High-pressure torsion (HPT) is widely used as a severe plastic deformation technique to create ultrafine-grained structures with promising mechanical and functional properties. Since 2007, the method has been employed to enhance the hydrogenation kinetics in different Mg-based hydrogen storage materials. Recent studies showed that the method is effective not only for increasing the hydrogenatio...
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ژورنال
عنوان ژورنال: Journal of Materials Science
سال: 2011
ISSN: 0022-2461,1573-4803
DOI: 10.1007/s10853-011-5822-z