[PDF] Top 20 Process Modelling of Equal Channel Angular Pressing for Ultrafine Grained Materials

... a pressing load and obtaining more homogeneous deformation in ECAP is to modify a perform shape, which is widely used in conventional metal forming processes, ...the pressing load is less than the other two ... See full document

... in ultrafine grained materials is due their unusual mechanical ...properties. Equal channel angular pressing (ECAP), which primarily introduced by Segal is one of the ... See full document

... Another aspect which is important for the application of copper is its corrosion resistance. The question arises of how the grain refinement, which improves the strength of the material very well, may influence the overall ... See full document

... Better wear resistance was shown by the steel, treated under the regime of ECAP and HT. High wear resis- tance steel with UFG and nanostructure formed by ECAP HT was due to the peculiarities of volumetrically strained ... See full document

... the ultrafine and coarse regimes; the model approximates this in terms of two phases with distinct grain sizes and with specific volume ...bimodal materials: the Al-5083 alloys of Lavernia et ...the ... See full document

... Equal channel angular pressing (ECAP) is one of the most popular methods of obtaining ultrafine grained (UFG) ...the process, so called ...promising materials for ... See full document

... pronounced grain coarsening take place during cyclic deformation of high-purity UFG Cu (99.99%), while they have not observed the grain elongation as represented in the present study. Therefore, the results of our study ... See full document

... processes are expected to enhance the microstructural features such as grain refinement and high misorientation angle between the grains. Inspite of the above applications and advantages, no detailed and systematic ... See full document

... Equal-channel angular pressing (ECAP) was applied to achieve grain refinement of Al–3 mass%Mg alloys containing 0.2 mass%Sc, 0.2 mass%Fe or 0.1 mass%Zr. The thermal stability of the ... See full document

... develop ultrafine grain sizes in a range of materials, very recent results have shown that the high pressures inherent in ECAP may lead also to a breaking of precipitates in metallic alloys ... See full document

... ABSTRACT: Equal Channel Angular pressing is a unique Severe Plastic Deformation Process for producing ultra-fine grain sized ...a channel angle of 110 o in a 100 ton hydraulic ... See full document

... incremental equal channel angular pressing ...Fine- grained samples were successfully processed at 200 °C, while coarse-grained ones must have been heated up to 250 °C to avoid ... See full document

... by equal channel angular pressing (ECAP) in comparison with their annealed or ordinary cold-worked ...ECAP materials are discussed in detail upon in-situ and post-experimental surface ... See full document

... a channel in L-shaped configuration with an angle of 90° between the two channels and an angle of 0° at the outer arc curvature at the point of ...the pressing temperature was controlled within «5 K of ... See full document

... Equal channel angular pressing (ECAP) is a severe plastic deformation (SPD) technique leading to re fi nement of the grain size of materials to submicron or even nano-size length ... See full document

... this process are required, e.g., equal channel angular sheet ...the process is thus equivalent to conventional ...the process of grain refinement and the formation of high-angle ... See full document

... superb endurance limit in the high-cyclic fatigue (HCF) together with a good resistance to short time periodic overloads in the low-cyclic fatigue (LCF) regime. The requirement of having the electric conductivity ... See full document

... The material used in this investigation was commercial purity magnesium (0.11% Mn, 0.03% Si, and Mg balance). For ECAP processing, the billet was cut into 6 mm 6 mm 50 mm workpieces, which were surface-polished using ... See full document

... For ultrafine-grained (UFG) fcc metals with grain size between 100 nm and 1 µm, it is known that both strength and strain-rate sensitivity increase with decrease in grain size. 1­7) From the viewpoint of ... See full document

... by equal channel angular pressing (ECAP) up to eight passes at room ...and ultrafine grains are ...the ultrafine pure copper with sub-micro-meter grain sizes that can improve ... See full document