|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Environmentally Assisted Cracking: Theory and Practice
||Investigation of Fundamental Mechanical and Electrochemical Mechanism during the Tribocorrosion Process of Aluminum Using Experiments and Simulations
||Kaiwen Wang, Wenjun Cai
|On-Site Speaker (Planned)
Aluminum and its alloys are excellent corrosion resistant materials due to its passivity and lightweight. However, the main threat to the integrity of Al based materials is tribocorrosion, during which corrosion and wear works synergistically to cause material degradation. In this work, fundamental mechanisms of tribocorrosion for Al are investigated on single crystal pure Al using both experimental methods and finite element (FE) simulations. Electrochemical properties were extrapolated from potential-dynamic measurements and mechanical properties from microindentation tests. Lattice rotation and dislocation density was characterized from crystallographic orientation mapping results. Based on the experimental inputs, a FE model was built to quantitatively analyze the wear process and the increase in corrosion rate due to depassivation, geometry effect, and wear-induced lattice rotation. The model is then verified by experimental results and proved capable of predicting the material loss due to tribocorrosion under different mechanical and chemical conditions.
||Aluminum, Environmental Effects, ICME