Developing Empirical Relationships to Predict Tensile Properties of Friction Welded AISI 52100 Grade Steel Rods

Abstract

In this work, friction welding of AISI 52100 grade steel rods of 12 mm diameter was investigated to predict the value of tensile strength. The Joints made with various process parameter combinations were subjected to tensile tests. The primary process parameters are considered in ratios (friction pressure/friction time, forging pressure/forging time, rotational speed/sec). This is done to make as three factors. Here, the three factors, five levels, central composite, rotatable design matrix are worn to optimize the required number of experiments. The Empirical relationships were developed by Response Surface Method (RSM). The adequacy of the models was checked through ANOVA technique. Through using the developed Empirical relationship, Ultimate Tensile Strength (UTS) of the joints can be predicted by means of 95% confidence level.