نتایج جستجو برای: ecap
تعداد نتایج: 614 فیلتر نتایج به سال:
This paper was aimed at verification of functionality of the ECAP technology at extrusion of the copper, alluminium alloys and steel. Experiments were made on equipment, which is demonstrated in the Fig 1. Deformation forces were measured during extrusion, resistance to deformation was calculated and deformation speed was determined approximately. Analysis of structure was made with use of ligh...
In this paper, the effect of Equal Channel Angular Pressing (ECAP) process on the structure and mechanical properties of AM30 magnesium alloy was studied. The results showed a considerable effect of ECAP process on creating an ultrafine grain size structure. Scanning Electron Microscope indicated that the grain size dropped from 20.4 µm in the extruded form to 7.2 µm in the first pass and 3.9 µ...
The mechanical properties and deformation behavior of a Cu-Cr-Zr alloy after solution treatment (ST) or aging (ST+AT) equal channel angular pressing (ECAP) at elevated temperature were investigated. ECAP led to strengthening degradation plasticity compared with the initial state. 1 2 passes 200 °C was almost same. An increase in promoted uniform strain plasticity. number gradual strength. YS UT...
The purpose of this study was to evaluate the corrosion behavior 1010 steel processed by Equal Channel Angular Pressing (ECAP), a technique that induces severe plastic deformation (SPD) in materials. samples were one and two passes ECAP throught routes A C. using potentiodynamic polarization electrochemical impedance spectroscopy, NaCl (pH= 6.5) sodium hydroxide/sodium phosphate 10.5) solutions...
The technique known as Equal Channel Angular Pressing (ECAP) has gained prominence a transformational method for improving the mechanical characteristics of metals and alloys by subjecting them to intense plastic deformation. This study explores significant difficulties that arise when using on Aluminium 2024-Beryl Metal Matrix Composites (2024-BMMCs), providing detailed analysis complex intera...
In this paper, we study the strength and fracture mechanism of cast magnesium alloy Mg-Zn-Ca (1.0 % Zn, 0.2 Ca) for medical applications after equal-channel angular pressing (ECAP) in comparison with initial condition (after homogenization annealing). Mechanical tests included tensile torsion samples a diameter 3 mm impact V-shaped stress raiser. The microrelief all fractures was studied Phenom...
Abstract. The excellent performance of duplex and super stainless steels due to their high corrosion resistance mechanical strength is directly related austeno-ferritic microstructure. However, these may suffer the formation secondary brittle phases when they reach temperatures between 600°C 950°C causing catastrophic service failure components. In order understand influence history steel, equa...
The geometrical structuring of a material to increase both physical and mechanical qualities is known as Severe plastic deformation (SPD). To obtain superior qualities, the co-channel angular (ECAP) approach, which an alternative conventional deformation, applied developed. When compared previous procedures, substan- tially smaller grain size obtained result applying large unit defor- mation pa...
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