Simulating and Understanding Localized Corrosion of Additive Manufactured Stainless Steels

Simulating and Understanding Localized
Corrosion of Additive Manufactured
Stainless Steels Under Simulated Pipeline
Mechanical, Corrosion and Erosion
Conditions

Introduction
a) Stainless steel has been extensively used in many manufacturing industries for
decades, like steel components in oil refining facilities, chemical factories,
mineral transport systems and water-cycle pumps and most importantly
pipelines.
b) The Stainless steel which is resisted from the corrosion can provide extreme
conditions with erosion and impact of elements.
c) It has been observed that the combined effect of corrosive erosion and wear
could bring deterioration on metal much higher than of the damage created by
corrosion or wear individually.
d) The prompt passivation practice of stainless steel may avoid the steel from
severe damage through minimizing the combined effect of corrosion and
erosion due to the establishment of a shielding inert film on the surface. Once
the inert film is cracked by the effect of sand elements or other types of wear,
the metal may restore a new inert film on the simple surface in about one tenth
second (Wang and Li (2002), Garcia et al. (2001)).

Problem Statement
As the combined effect of corrosion and erosion may lead to the sever
damage on the stainless steel meatal materials, the investigations of
chemical and mechanical properties are required based on the Newton’s
law. Though various FE models are developed to analyze the wear
processes utilizing different methods, such as upper-bond method, the
finite element method, slip line theory and the molecular dynamics
simulation, very limited research have been carried out to get rid off
corrosion and erosion synergy on material properties.

Deliverables
1) Clear visualization of the localized corrosion causes the several
problem in various industries such as oil, water pump and
pipeline etc.
2) Different FE model to simulate the corrosive wear activities i.e.,
upper-bond method, slip line theory and the finite element
method.
3) Comparison of all mentioned FE results.
4) Micro-scale dynamic method (MSDM) to analyze the corrosion
effect on the stainless steel