Load and Temperature Significance on Tensile Strength and Flow Stress Distributions of Ecae Aluminum 6063

Abstract

<div>Equal Channel Angular Extrusion (ECAE) method was considered an</div><div>effective metal forming procedure to obtain higher toughness, hardness, and smooth</div><div>texture. However, the magnitude of these improvements relies on extrusion load and</div><div>temperature applied. This research assesses the impact of these extrusion variables on</div><div>the mechanical properties and stress distributions in the Aluminum 6063 (Al 6063)</div><div>produced by ECAE. Specimens of Al6063 alloy were extruded through a locally</div><div>designed and manufactured ECAE die using two factors of extrusion in three levels:</div><div>temperature (350 oC, 425 oC, 500 oC) and punch load (1000, 1100, and 1200 kN). The</div><div>speed of the ram was held steady at 5 mm/s. The tensile strength of all extruded</div><div>aluminum alloys was assessed with the universal test machine. Specimens of identical</div><div>sizes and attributes were also modeled using qform software under extended applied</div><div>load and temperature to investigate the distribution of stress in the extrudates. Research</div><div>findings revealed that the temperature of the billet had an impact on the tensile strength</div><div>more considerably than the load applied. Results of simulation revealed that more</div><div>homogeneity of stress at a lower magnitude was noticed in extrudates with an</div><div>increment in temperature of the billet. The simulation also reiterated the dominance of</div><div>the billet temperature over the applied load on the stress dispersion with a maximum</div><div>extrusion load of 500 kN at 350 oC temperature, regardless of the load applied. This</div><div>result reveals how extrusion temperature increase and load enhance the tensile strength of alloys but in varying degrees. An increase in load above normal level does not<div>improve mechanical properties but is a waste of resources.</div><br></div>