Characterisation of Plasticity Response for Reciprocating Sliding Wear Test of Ti-6Al-4V under Variables Normal Load

Abstract

Reciprocating sliding wear test of uncoated titanium alloy, Ti-6A1-4V is investigated using pin-on-flat arrangement under variable applied normal load. The wear scar produced by the reciprocating sliding wear test is analysed by surface profile examination using 2D and 3D optical microscope (OM) and Scanning Electron Microscope (SEM). The hardness value of the wear scar is investigated at three regions which are; worn, unworn and the end of the wear track using Micro Vickers Hardness Test. The presence of moderate oxygen composition and the increasing in hardness value at the end of wear track suggesting evidence of plastic deformation.

Investigation on the Effect of Reciprocating Sliding Wear Test for Titanium Alloy, Ti-6Al-4V under Frequency Set Up

“…According to Harun [8], two mechanisms of plastic deformation were highlighted which are global deformation (similar to ploughing) through the asperity overlaps and shear localization along a fine zone similar to adiabatic shear band. The rapid wear can be classified as furrow wear with large spall under SEM analysis while OM observation discovered that the microstructure at the wear contact surface underwent apparent plastic deformation.…”

Characterisation of Plasticity Response for Reciprocating Sliding Wear Test of Ti-6Al-4V under Variables Number of Cycles

“…The contact pressure applying to the wear test give significant features towards the mechanism involved. It is increase at the center of the contact with cycling [7] and for most contact pressure is effect of material removal that gives rise to cyclic plasticity and hence significant accumulation of plastic strain. The present study is an extension of previous similar studies [8], however, characterizes the wear under reciprocating sliding wear conditions with variable low number of cycles at initiation period of wear on the flat bar specimen unlike the previous studies where flat bar specimen was applied with variable number of normal load.…”