An Investigation on the Effect of Axial Pressures on the Mechanical Properties of Friction Welded Dissimilar Steels

Amit Handa,Vikas Chawla

doi:10.1155/2014/639378

Abstract

The aim of the present study was to investigate the effect of axial pressures on the mechanical properties of friction welded AISI 304 with AISI 1021 steels, produced by mechanical joining. In the present study, an experimental setup was designed in order to accomplish friction welded joints between austenitic stainless steel and low alloy steel. Samples were welded under different axial pressures, at a constant speed of 800 rpm. The tensile strength, impact strength, and microhardness values of the welded joints were determined and evaluated and on the basis of the results obtained from the experimentation, the graphs were plotted.

Highlights

Joining of metals is one of the most essential needs of industries [1] and the joining of dissimilar metals is generally more challenging than that of similar metals because of the difference in the physical, mechanical, and metallurgical properties of the parent material to be joined as has been reported by Satyanarayana et al [2]
It has been observed that the tensile strength obtained from the specimens varied from 381.76 MPa to 408.08 MPa; it has been depicted from the values obtained experimentally that with the increase in the axial pressure the tensile strength goes on increasing and this may be attributed to the fact that with the increase in axial pressure more mass is thought to be transferred at the weld interface
(1) The axial pressure has been found to be an influential parameter for the friction welding process, which has been optimized for the process based upon the results of the present study

Summary

Introduction

Joining of metals is one of the most essential needs of industries [1] and the joining of dissimilar metals is generally more challenging than that of similar metals because of the difference in the physical, mechanical, and metallurgical properties of the parent material to be joined as has been reported by Satyanarayana et al [2]. Besides common material combinations such as steel to steel, friction welding permits high quality dissimilar combination weldments of materials It gives solid state joining of the materials through the controlled rubbing of the interfaces. Due to this produced heat softens the material and brought the localized faces into the plasticized form which results in good quality welds as suggested by Sathiya et al [4]. In this process heat energy is produced by the interconversion of mechanical energy into thermal energy at the interfaces of the rubbing components as found by Sahin et al [5]

Objectives

Methods

Results

Conclusion