Equal channel angular pressing (ECAP) was performed on ZK60 alloy and pure Mg in the temperature range 150-250 °C. A significant grain refinement was detected after ECAP, leading to an ultrafine grain size (UFG) and enhanced formability during extrusion process. Comparing to conventional coarse grained samples, fracture elongation of pure Mg and ZK60 alloy were significantly improved by 130% an...

Ultrafine-grained Al matrix nanocomposites, reinforced with Al2O3 nanoparticles, were produced from milled powders, either by equal channel angular pressing (ECAP), at room or high temperature, without back pressure, spark plasma sintering (SPS). Their microstructures, mechanical properties (compression, hardness, and sliding wear), thermal stabilities (thermally induced softening cracking) com...

In recent years, research on ultra-fine grain materials has gained attention. While attempts have been made to improve the properties of material, it also become increasingly important decrease costs. Studies improving material revealed new production methods or required revision existing methods. this direction, severe plastic deformation come fore as a good alternative, and by with variations...

In this study, investigations into the deformation behavior of aluminum AA5083 at elevated temperatures were carried out on a newly developed test rig. The rig was jointly with ZwickRoell GmbH & Co. KG (Germany) and is based Nakajima heated dies. way, statements can be made about lightweight potential alloy. Additionally, equal-channel angular pressing (ECAP) performed to process sheet meta...

Abstract Severe plastic deformation (SPD) processes offer the possibility of improving mechanical properties metallic materials by grain refinement. However, this great potential has so far mostly been applied on a laboratory scale or small series. Equal-Channel Angular Pressing (ECAP) also enables to integrate advantages in industrial with large output—so far, mainly for bars thick plates. In ...

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 ...

This paper reported the results of research into effect Equal Channel Angular Pressing (ECAP) temperature and 1-h annealing on mechanical properties, stress-relaxation resistance, corrosion resistance austenitic steel AISI 321L with strongly elongated thin δ-ferrite particles in its microstructure. The formation α′-martensite fragmentation austenite grains takes place during ECAP. Ultrafine-gra...