Enhancement of mechanical and metallurgical properties of brass tubes fabricated using friction stir back extrusion by optimizing the process parameters

The study is going to discuss the possibility of using the friction stir back extrusion (FSBE) in producing brass wires, specifically optimizing the process parameters to achieve higher ultimate tensile strength. Central composite design of experiments is utilized to systematically analyze the most crucial variables: feed rate, process temperature, and tool rotational speed, as they impact the mechanical characteristics of the wires produced. As revealed by analysis of variance analysis, the tool's rotational speed is significantly affecting tensile load, while feed rate does not have any significant effect. This test load reached the maximum tensile value of 676 MPa, which occurred due to optimal processing conditions of this experiment that were: rotation speed of 2400 min −1 , feed rate 0.7 mm/min and process temperature of 340 °C. Confirmation tests verify such results so the obtained optimization parameters are reliable and viable for processing. The research gives crucial insights into the industrial applications requiring superior mechanical properties and points out the importance of parameter optimization in friction stir back extrusion for the production of high‐strength brass wires.