engleski

BI-Metallic Cold Backward Extrusion – Numerical Simulation with Experimental Verification

Bi-metallic extrusion is a metal forming operation where billet is composed of two different metallic materials which are then concurrently extruded into a final workpiece. In this way final component, consisting of two different materials which are metallurgically bonded, is created. Extrusion of bi-metallic workpieces differs in many aspects from the classical single-metal extrusion. Although bi-metallic extrusion enables beneficial utilization of favourable characteristics of both paired materials, this process has not been often applied in the industrial practice so far. This is mainly due to the certain dearth of knowledge and experience in this field. The present study is bound to the backward extrusion of bi-metallic materials. Combination of Al-Cu as a billet composition is explored numerically and experimentally. Material flow as well as mechanical properties of the obtained bi-metallic component have been determined and analysed.

bi-metallic extrusion; numerical simulation; experiment

nije evidentirano