Abstract This study investigated the impact of equal channel angular pressing (ECAP) combined with heat treatments on microstructure and mechanical properties AlSi10Mg alloys fabricated via selective laser melting (SLM) gravity casting. Special attention was directed towards determining effect post-fabrication microstructural evolution alloy using two different routes. Three initial conditions ...

Mechanism of fatigue crack initiation was investigated in ultrafine-grained (UFG) magnesium alloy AZ91 processed by equal channel angular pressing (ECAP). Fatigue behaviour of UFG material was compared to the behaviour of material in an initial as-cast state. Focused ion beam technique (FIB) was applied to reveal the surface relief and early fatigue cracks. Two substantially different mechanism...

among different spd techniques, equal channel angular pressing has attracted the most attentions,because of applying large strain to solid bulk materials. in this research, ecap process up to 6passes was carried out on a pure copper and a 6012 al-mg-si alloy with bc route in ecap dieswith φ=120 and ψ=20 and diameter of 20and 10 millimeter respectively. moreover, x-raydiffraction (xrd) system wa...

• 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...