Mechanical Design and Production Department, Faculty of Engineering, Zagazig University
The aim of this study is to investigate experimentally the effect of increasing rotational speed
on the weld joint strength of an equal diameters of AISI 304l alloy steel. . Friction welding
was conducted using three rotational speeds; 800,1000 and 1200. Friction pressure, forging
pressure, friction time and forging time are kept constant. The integrity of the joints has been
investigated by visual and electron microscopy. The mechanical properties assessment
included hardness and tensile tests were carried out to weld joints.
The experimental results showed that the thickness of full plastic deformed zone (FPDZ) was
increased as rotational speed is increased. It was also observed that the width of the FPDZ has
an important effect on the tensile strength of friction welding samples; the tensile strength
increases with increase of the rotational speed. The simulation of temperature and using finite
element was also presented and discussed.