ECAP process
Numerical and analytical investigation of an ultrasonic assisted ECAP process
... the ECAP process, a sample experiences variable loads while sliding inside two ...special process which involves very high contact pressures (about several times the sample’s yield strength) ...
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Microstructural evolution of AA1070 Al alloy deformed bycold ECAP process from route C.
... the ECAP process, a simple shear deformation is applied to the material during its passage over the intersection of the channels, which promotes microstructural ...
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SPH Analysis of ECAP Process by Using Grain Refinement Model
... Although the SPH method is using particles, it is still a macroscopic (i.e. continuum) simulation. Therefore it re- quires parameters for the constitutive relation which ex- presses mechanical or physical response of the ...
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Effect of Preheating Temperature on ECAP Formability of AC4CH Aluminum Casting Alloy
... repetitive ECAP press, the cracks occurred in the test piece and the ECAP process became ...of ECAP channel angle and propagated preferentially along the solid- ification cell regions, that is, ...
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Processing and Mechanical Properties of Fine Grained Magnesium by Equal Channel Angular Pressing
... the ECAP process is so far the most viable forming procedure to extrude material by using specially designed channel dies without any substantial changes in geometry and to produce UFG ...on ECAP is ...
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A Study On Effect Of Ultrafine Grain Refinement On Mechanical Properties Of Non-Heat Treatable Alloys
... Among the procedure devised for grain refinement, severe plastic deformation is of particularly interest and the focus of this study. This project work deals with the concept of ECAP used to introduce severe ...
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Effect of Annealing on the Pitting Corrosion Resistance of Anodized Aluminum Magnesium Alloy Processed by Severe Plastic Deformation
... of ECAP and annealing on the internal stress in anodic oxide films on Al and Al-Mg alloys Figure 8 shows the time-dependence of the strain of Al, Al–Mg alloys samples during anodization at 400 Am 2 ...undergone ...
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Design Optimization of Angular Extrusion for Severe Plastic Deformation of Tubular Specimens
... was achieved through the ECAP process as shown in Fig. 1(a). Furthermore, it can be seen that this equivalent strain is nearly homogeneously distributed within a considerable length of the sample after ...
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Microstructure Evaluation of Equal Channel Angular Extrusion in Aluminium 5083 Alloy by Cryogenic Treatment
... extrusion process (ECAP) using route-Bc at room temperature and cryogenic ...the ECAP process the material properties were ...the ECAP process is tabulated against the initial ...
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Finite Element Study on the Development of Damage and Flow Characteristics in Al7075 Alloy during Ex ECAP
... For detailed study on the nature of damage develop- ment during Ex-ECAP process, four nodes are selected across the region (E) from surface to center line of sample. As shown in Figure 8(a), plastic strain ...
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The Influence Of ECAP On The Microstructural And Tribological Properties Of AA6061
... the ECAP process, substantial modifications in mat erial microstructure occur such as intense grain and particle re fining in the second stage, structure formation characterized b y equi-axed grains and ...
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Incremental ECAP of thick continuous plates - machine and initial trials
... of ECAP passes, required to accumulate high strain, the classical ECAP process was modified to incorporate a channel with two turns [6], which is equivalent to route C (180° rotation about billet ...
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A comparison between numerical and analytical modeling of ECAP
... element modeling (FEM). Simulated load-stroke curve and peak load calculations were compared with the experimentally recorded load-stroke curve and peak load. A good conformity was observed between the FEM calculations ...
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Design Optimization of Angular Extrusion for Severe Plastic Deformation of Tubular Specimens
... strain of 1.3 was achieved through the ECAP process as shown in Fig. 1(a). Furthermore, it can be seen that this equivalent strain is nearly homogeneously distributed within a considerable length of the ...
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Microstructure and mechanical properties of Al-1050 during incremental ECAP
... of ECAP is the length of the billets processed, due to the limitation of the stroke length of the ...the ECAP process, does not have this limitation therefore can process very long ...
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Plastic Flow and Strain Homogeneity of an Equal Channel Angular Pressing Process Enhanced through Forward Extrusion
... FE+ECAP process, stage 2 of ...influenced ECAP deformation stages 3–5 in ...the ECAP region undergoes very little strain hardening, hence, a corner gap is not ...simple ECAP, as shown in ...
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RESEARCH OF FATIGUE AND MECHANICAL PROPERTIES AlMg1SiCu ALUMINIUM ALLOYS
... 9. Kvačkaj T. et al. Simulation of ECAP process by fi- nite element method. Kovove Mater., 45, 2007, 249. 10. Spišák E. et al. Effect of the electrolyte tempera- ture and the current density on a layer ...
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Enhanced Mechanical Properties of Nano/Meso Hybrid Structure Materials Produced by Hot Roll Sintering Process
... (SPD) process, 1,2) such as high pressure torsion (HPT), 3) equal channeling angular pressing (ECAP), 4,5) accumulative roll bonding (ARB) 6) and mechanical milling (MM) or alloying ...PM) process, ...
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Tailored sheared blanks produced by incremental ECAP
... In this paper, two cases of processing sheets with I-ECAP are considered. The first case, described in [9], involves two metal strips with 250 mm cross-section separated with a segmented feeder (Fig. 1). The ...
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Producing high-strength metals by I-ECAP
... Mechanical properties of metals and alloys can be also improved by proper thermo-mechanical treatment, including conventional forming operations, e.g., forging, extrusion, rolling, with carefully selected process ...
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