One of sheet severe plastic deformation (SPD) operation, namely constrained groove pressing (CGP), is investigated here in order to specify the optimum values for geometrical variables of this process on pure aluminium sheets. With this regard, two different objective functions, i.e. the uniformity in the effective strain distribution and the necessary force per unit weight of the specimen, are...

Bu çalışmada bir Aşırı Plastik Deformasyon (Severe Plastic Deformation-SPD) yöntemi olan Çok Yönlü Dövme (Multi-Directional Forging ‘MDF’) işleminin AA5083 alüminyum alaşımına uygulanması deneysel olarak incelenmiştir. MDF işlemi, tavlama ısıl işlemi yapılarak homojenleştirilen numuneler üzerine oda koşullarında yaklaşık 25 °C sıcaklıkta 4 pasoya kadar uygulandı. işleminde küp şeklindeki hazırl...

We investigated the alloy composition of Mg-Ca-Zn alloys suitable for rapidly solidified powder metallurgy (RS PM) processing and tried to develop biomedical RS PM with high strength, ductility, corrosion resistance. The was Mg-1.0Ca-0.5Zn (at%) in ternary alloys. An combined additions 0.1 at% Y 0.03 Mn exhibited excellent performance a tensile yield strength 376±17 MPa, an elongation 14.1±3.1%...

The microstructure and mechanical properties of materials saturate to steady states after severe plastic deformation (SPD). Despite the well-known effect temperature on steady-state microstructure, there is no general agreement significance strain rate applicability Zener-Hollomon parameter in this regard. In study, several pure metals (aluminum, copper, titanium, iron) a Cu–30Zn (wt%) brass al...

Abstract This paper presents some results of the influence severe plastic deformation on microstructure evolution, grain refinement aspect, and mechanical properties ultra-low carbon steel. Ti-stabilized experimental IF steel was deformed at a room temperature with unconventional SPD process—dual rolls equal channel extrusion (DRECE). Mechanical structure ferritic in initial state after selecte...