Abstract
The present study is an attempt to find out the effect of environmental corrosion on the commonly used pearlitic rail steel. The cases of corrosion of rail under Indian environment have been studied. It has been found that in marine environment both the yield strength and tensile strength decreases with increasing corrosion rate. In acidic environment yield strength increased with increasing corrosion rate, although the tensile strength decreases with increasing corrosion rate.
Highlights
Modern Railway systems are subjected to use with fast trains and large loads
The reason for the above results may be written as follows: In marine environment both the yield strength and tensile strength decreases with increasing corrosion rate i.e. with increasing temperature corrosion rate increases and strength decreases
In acidic environment tensile strength decreases with increasing corrosion rate
Summary
The primary requirement is structural integrity, which determines the suitability of steel for rail track applications It depends on interactions between engineering parameters, material properties and the environment. Chowdhary have made investigation to assess the condition of rail, presence of corrosion activity and the extent of severity of corrosion [1] They pointed out that presence of NaCl and H2SO4 in the atmosphere may cause concern. As it is established that corrosion may be considered as one of the precursor for the initiation of fatigue failure of rails, in the present work, an attempt has been made to study the corrosion behavior in saline as well as acidic (H2SO4 in tunnel) atmosphere along with its effect on mechanical properties of pearlitic rail steel
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