Development of Intense Plastic Strain and Ultrafine Grains in Thicker Samples Processed by High-Pressure Torsion and High-Pressure Sliding
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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Influence of Mo alloying on the thermal stability and hardness of ultrafine-grained Ni processed by high-pressure torsion
The influence of Mo alloying on the thermal stability of grain size, dislocation density and hardness of ultrafine-grained (UFG) Ni alloys was studied. The UFG microstructure in alloys with low (∼0.3 at.%) and high (∼5 at.%) Mo contents was achieved by high-pressure torsion (HPT) performed for 20 turns at room temperature. The thermal stability of the two alloys was studied by calorimetry. A Cu...
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A CoCrFeNiMnTi0.1 high-entropy alloy (HEA) was subjected to high-pressure torsion (HPT) processing under 6.0 GPa pressure up to 10 turns. XRD results reveal that the initial and HPT-processed microstructures consist of a single fcc phase and there is no evidence for creating a new phase and the occurrence of a phase transformation during HPT processing. It is shown that there is a gradual evolu...
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ژورنال
عنوان ژورنال: Journal of the Japan Institute of Metals
سال: 2011
ISSN: 1880-6880,0021-4876
DOI: 10.2320/jinstmet.75.412