Simulating and Understanding Localised Corrosion of Additive Manufactured Stainless Steels

1
PROJECT INITIATION
By Name
Course
Instructor
Institution
Location
Date

2
SIMULATING AND UNDERSTANDING LOCALISED CORROSION OF ADDITIVE
MANUFACTURED STAINLESS STEELS UNDER SIMULATED PIPELINE
MECHANICAL CORROSION AND EROSION CONDITIONS.
Introduction
Localized corrosion refers to the selective removal of the metal by corrosion at small zones or
areas on a metal surface corrosive e environment, normally a liquid. It generally occurs when
small local sites are attacked at a rate which is higher than the rest of the original surface
(AlMangour, 2014, p. 710). Usually, the localized corrosion occurs when corrosion works with
other destructive processes such as fatigue, erosion, stress and any other forms of the chemical
attack. The localized can cause more damage than any one of the individual destructive process
individually. There exists a wide range of localized corrosion, wastage, heat exchanger tube
denting, intergranular attack corrosion, stress corrosion cracking and pitting corrosion
(Uduwage, 2015, p. 983).
In the recent past, additive manufacturing has got tremendous attention because of the ease in the
production of the complex metallic parts which are used in different applications such as
petrochemical and aerospace (Milewski, 2017, p. 159). Nevertheless, there is very scarce
literature regarding the corrosion behavior of the additive manufactured alloys. This project
presents localized corrosion of additive manufactured stainless steels under simulated pipeline
mechanical corrosion and erosion conditions (Godfrey, 2018, p. 772).
Aims and objectives
The main aim of this project is to simulating and understanding localized corrosion of additive
manufactured stainless steels under simulated pipeline mechanical corrosion and erosion

3
conditions. With that different specific objectives were set to assist in achieving the main aim of
the project and they include;
1. Finding out what Localized corrosion is
2. Understanding the concept of additive manufacturing
3. To find out the properties of stainless steel (Baughman, 2018, p. 332)
Literature review
Stainless steels are considered as very important class of alloys which has wide range of
application in industries. The stainless steel are known to possess a high level of resistance to
corrosion which is associated with the availability of alloyed chromium, which facilitates the
formation of chromium oxide, which is highly based on passive film upon the metal
surfaces (Davis, 2018, p. 82). The additional of extra elements such as such as nitrogen, copper,
aluminum, Selenium and carbon can greatly modify the resistance to corrosion, increase
strength, machinability, ductility and the phase’s presents in the stainless steel. (AlMangour,
2018, p. 78).
Corrosion testing
Corrosion of the polished stainless steel is investigated by the mutilation of many methods which
includes cyclic potentiodynamic, potentiostatic holds and the double loop electrochemical
potentiokintic reactivation with the post- and premortem analysis (Virtanen, 2014, p. 332).
Methodology