non-equal channel angular pressing
Incremental non-equal channel angular pressing - FE simulation
... properties, equal channel angular pressing (ECAP) is the most popular one because of the relative simplicity of tool design (two intersecting channels) and tool kinematics (static die and ...
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Microstructural Evolution and Mechanical Properties of High Purity Aluminium Processed by Equal Channel Angular Pressing
... Hardness measurements and tensile tests revealed that the highest values of both hardness and strength were achieved after the first two passes. This must be related to the development of a subgrain structure which ...
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Deformation Characteristics Evaluation of Modified Equal Channel Angular Pressing Processes
... more non-uniform strain with a maximum of about 4 and minimum of almost ...more non-uniform in T-ECAP, with large variation of effective strain from ...
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Plastic Flow and Strain Homogeneity of an Equal Channel Angular Pressing Process Enhanced through Forward Extrusion
... extrusion, equal channel angular pressing, and a combination of the forward extrusion and equal channel angular pressing processes are analyzed by the finite element ...
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Superior Strength of Austenitic Steel Produced by Combined Equal-Channel Angular Pressing and Rolling Processing
... After SPD processing by ECAP, within the austenite grains there was observed the formation of differently-directed shear bands (Fig.3, а). As a result of intersection of these bands, new boundaries form and grain ...
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Effect Of Equal Channel Angular Pressing On Microstructure And Mechanical Properties On Non Dendritic LM25 Aluminium Alloy
... As-cast, non-heat treated CS, T6 heat treated CS, non-heat treated ECAP and T6 heat treated ECAP 49 ...in non-heat treated CS sample 51 ...in non-heat treated ECAP sample 52 ...
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Strength Enhancement and Deformation Behavior of Gold after Equal Channel Angular Pressing
... The crack nucleation at the surface of the strengthened materials is not surprising because the intensive surface roughening and shear banding promotes crack nucleation at the surface offsets. The size of the surface ...
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Review on: influence of bp-ecap on mechanical characteristics of aluminium matrix composites
... techniques equal channel angular pressing and powder metallurgy ...etc. Equal-channel angular pressing (ECAP) is an effective fabrication process for obtaining ...
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Processing and Mechanical Properties of Fine Grained Magnesium by Equal Channel Angular Pressing
... However their poor ductility due to a small number of available slip systems in the basal plane and a difficulty in dislocation activities in the non-basal plane limits further engineering applications. A general ...
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Grain Size Strengthening in Equal Channel Angular Pressing Processed AZ31 Mg Alloys with a Constant Texture
... Schmid factors of three slip directions on the basal and prismatic planes were computed based on the most dominant texture components in the pole figures and the result was summarized in Table 1. For all the alloys after ...
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Equal Channel Angular Pressing to Produce Ultrafine Pure Copper with Excellent Electrical and Mechanical Properties
... Figure 5 shows the true stress–strain curves obtained from the compression tests of samples after one to four ECAP passes. For comparison, the flow stress–strain curve of NON-ECAP is also plotted. The true ...
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Hot and Cold Tensile Behavior of Al 6061 Produced by Equal Channel Angular Pressing and Subsequent Cold Rolling
... Using X-ray diffraction (XRD) technique, the microstructural evolutions were characterized in terms of the presence of second phases, the shifting in peak, maximum peak intensity changes, broadening peak and the ...
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Deformation Heterogeneities in Equal Channel Angular Pressing
... are sketched in Fig. 1(b). However, their e ff ectiveness in refining the microstructure is debated (e.g. Ref. 13)). Because of a complex deformation mode operative in the ECAP process, there exists a gradient from the top ...
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Microstructure and Mechanical Properties of Cp Al Chips Consolidated Through Hot Equal Channel Angular Pressing
... In Aluminium alloys, aluminium (Al) is the predominant metal. The typical alloying elements are copper, magnesium, manganese, and zinc. There are two principal classifications, namely casting alloys and wrought alloys, ...
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STRUCTURE OF ECAP ALUMINIUM AFTER DIFFERENT NUMBER OF PASSES
... by equal channel angular pressing in the as pressed state after different number of passes was examined using various stereological ...anisotropy, equal channel angular ...
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A Portrait of Copper Processed by Equal Channel Angular Pressing
... active-passive transition potentials, cf. Table 1, also shows that there is almost no difference in the corrosion behaviour between the ECAP processed and the coarse grained copper. To investigate the local patterns of ...
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Computational Analysis of Equal Channel Angular Pressing for Aluminum Alloys K Veeranjaneyulu & Ch Siddhartha
... of Pressing Speed and Temperature Processing by ECAP is usually conducted using hydraulic presses that operate with relatively high ram ...the pressing speeds are in the range of 1–20 mm s −1 ...the ...
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Microstructuralevolution and mechanical behavior during annealing of aluminum deformed by equal channel angular pressing
... The mechanical and physical properties of polycrystalline materials are determined by several factors. Grain size is often the factor that influences it in a significant and dominant way. Thus, controlling grain size is ...
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Microstructure and Texture Evolution of the Al 20Sn Alloy Processed by Equal Channel Angular Pressing Using Route C
... In this work, the microstructure and texture evolution of an Al-20Sn (mass % ) alloy processed by Equal Channel Angular Pressing is presented. The evolution of dislocation cells into subgrains ...
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Grain Refinement in As Cast 7475 Aluminum Alloy under Hot Equal Channel Angular Pressing
... during equal channel angular pressing (ECAP) was studied in an as-cast ...strain. Pressing to a strain of 12 leads to a full development of new grains surrounded by medium to high angle ...
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