About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
Computation Assisted Materials Development for Improved Corrosion Resistance
|
Presentation Title |
A PRISMS-PF Based Application for Simulating Microgalvanic/Galvanic Corrosion in Alloys |
Author(s) |
Vishwas Goel, Yanjun Lyu, David Montiel, Katsuyo Thornton |
On-Site Speaker (Planned) |
Vishwas Goel |
Abstract Scope |
In this presentation, we will discuss the features and capabilities of a corrosion application developed within the PRISMS-PF framework for simulating microgalvanic and galvanic corrosion in alloys. PRISMS-PF is an open-source phase-field modeling framework that can solve coupled partial differential equations and employs a matrix-free variant of the finite element method with adaptive mesh refinement and explicit time-stepping. In the application, we consider physical phenomena such as migration of ions in the electrolyte, electrochemical reaction at the metal-electrolyte interface, and displacement of the metal-electrolyte interface due to corrosion. To simulate the interfacial motion, the Cahn-Hilliard equation is modified with an interfacial source term proportional to the velocity. The application is well suited for both 2D and 3D systems and exhibits superlinear parallel performance for a sufficiently large system. To demonstrate its utility, we will present the effect of microstructure and material properties on the corrosion rate in Mg-alloys. |