• The lamellar component of the alloy was spheroidized after ECAP deformation. by boundary-splitting mechanism. evolution primary alpha phase is controlled continuous recrystallization. Burgers orientation relationship between α and β phases found. In this work, electron backscatter diffraction (EBSD) applied for microstructural characterization advanced Ti-5.7Al-3.8Mo-1.2Zr-1.3Sn subjected to ...

This paper investigates the microstructural evolution and grain refinement kinetics of a solution-treated Cu-0.1Cr-0.06Zr alloy during equal channel angular pressing (ECAP) at a temperature of 673 K via route BC. The microstructural change during plastic deformation was accompanied by the formation of the microband and an increase in the misorientations of strain-induced subboundaries. We argue...

Abstract. In the evolution of characteristics in Mg alloys, combined influence grain refinement by severe plastic deformation (SPD) and alloying elements usually plays a crucial role. Rare earth (Y, Gd, Nd) combination with Zn have substantial impact on various compositions. this study, new dilute extruded Mg-Zn-Gd-Y-Nd alloy was exposed to 5 passes equal channel angular pressing (ECAP), die 90...

This paper presents a finite element simulation of equal channel angular pressing (ECAP) since it is one the most common and successful severe plastic deformation techniques. study reports influence significant factors influencing ECAP technique. Through simulation, effect die geometry, workpiece speed on effective strain distributions, damage, loads, were investigated. The method different mat...

Experiments were conducted on a magnesium AZ31 alloy to evaluate the role of cavitation in high temperature superplasticity. Samples were processed by equal-channel angular pressing (ECAP) and then pulled to failure in tension at a temperature of 623K. Similar tests were also conducted on the as-received alloy. The results show the development of significant internal cavitation in this alloy wh...

The full annealing AA6061 aluminum alloy was subjected to severe plastic deformationvia the combination of equal channel angular pressing (ECAP) and cold rolling (CR) in order torefine its microstructure and to improve its mechanical properties. According to the results of hotand cold tensile tests, the combination of ECAP and CR significantly affected the final strengthand ductility of studied...

Effects of annealing treatment after equal channel angular pressing (ECAP) on the interface properties and shear bond strength of Al/Cu bimetallic rods were investigated. For the as-deformed samples, the one with two passes of ECAP indicated higher shear bond strength. Formation of a layer of intermetallic compounds after annealing treatment is confirmed. In general, by increasing annealing tem...

After Severe Plastic Deformation (SPD), the strength of Armco iron sharply increases with number Equal-Channel Angular Pressing (ECAP) passes. So, ultimate tensile stress (UTS) reached up to 800 MPa after eight passes, reflecting an increment around four times than as-received material strength. The original grain size annealed about 70 ?m also experimented drastic changes ECAP, reaching sizes ...

Applications of a metallic material highly depend on its mechanical properties, which greatly the material’s grain sizes. Reducing sizes by severe plastic deformation is one efficient approaches to enhance properties material. In this paper, equal channel angular pressing (ECAP) will be reviewed illustrate effects refinement some common materials such as titanium alloys, aluminum and magnesium ...

in this article, commercially pure copper samples were severely deformed by equal channel angular pressing (ecap) up to eight passes at room temperature. the effects of severe plastic deformation on the microstructure, mechanical properties, and electrical conductivity of the copper were investigated. the microstructure evolution was followed by optical microscope and field emission scanning el...