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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Bulk Metallic Glasses XVIII
Presentation Title Atomistic Characterization and Modeling of Corrosion in Al-based Amorphous Metals
Author(s) Jia Chen, Wenjun Cai
On-Site Speaker (Planned) Jia Chen
Abstract Scope Amorphous metals and alloys have attracted increasing interest in various industries due to their high hardness, fracture strengths, elasticity limit, and corrosion resistance. While traditional precipitation-strengthened alloys typically suffer from the strength-corrosion resistance tradeoff, amorphous metals often exhibit excellent corrosion resistance, largely owing to the lack of secondary phases, the absence of grain boundary, and the retention of high alloying content in homogenous solid solution. In this study, the effects of manganese (Mn) on the corrosion resistance of amorphous Al-Mn was studied using experiments and atomistic simulation. It was found that Mn addition enhanced the corrosion resistance of Al without participating in the surface oxidation. The selective dissolution of Mn was believed to increase the free volume at the metal/oxide interface to facilitate the formation of a denser, thinner oxide layer with closer to stoichiometry composition and enhanced barrier characteristics against corrosion.
Proceedings Inclusion? Planned:

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Atomistic Characterization and Modeling of Corrosion in Al-based Amorphous Metals
Brittle-to-Ductile Transition in Metallic Glasses
Competing Effects of Topology and Chemical Bonding on Mechanical Properties of Metallic Glasses
Correlated Disorder Order in a Model Binary Glass
Demisability of Bulk Metallic Glasses for Potential Satellite Applications
Effect of Porosity Level on the Mechanical Properties of Bicontinuous Nanoporous Metallic Glasses
Effect of Porosity on Fracture Behavior of Porous Bulk Metallic Glasses
Effective Quantification of Liquid Structure in Metallic Alloys and its Relation to Glass-Forming Ability
Emerging Fractal Potential Energy Landscape as the Origin of Activation Volume in Metallic Glasses
Fabrication of Fe-based Metallic Glassy Microparts Through Unprecedented Processes
Fragility, Medium Range Order and Boson Peak in Liquids
Glass Forming Ability of the Cu-Zr Alloys: What Do We Learn from Molecular Dynamics Simulation?
Local Structure of the Al-RE Marginal Metallic Glasses Studied by Molecular Dynamics Simulation
Machine Learning from Elemental and Simulation Features for Predicting Glass Forming Ability
Measuring Metallic Glass Viscosities Over Wide Composition Ranges
Mechanical Behavior and Phase Stability of Ductile Metallic Glass Nanoparticles
Microscopic Description of Plasticity, Relaxation and Rejuvenation Using Anelastic Relaxation Spectra
Microstructure - Fracture Toughness Relationships in Bulk Metallic Glasses
Nanomolding Far and Close to Equilibrium
Non-destructive Probing of Internal Damage Processes in a Metallic Glass
Overview on Additive Manufacturing Techniques for Bulk Metallic Glasses
Selection and Testing of Bulk Metallic Glass Alloys for Space-based Mechanisms
Stress Breaks Universal Aging Behavior in a Metallic Glass
Structural Heterogeneities Dictate Strength and Fracture Toughness in a Zr-based Metallic Glass
Structural Relaxation and Mechanical Properties of Model Glass Systems at the Micro-second Timescale
Synthesis of Bulk Metallic Glass-alumina Composites with Intertwined Dendritic Structure
The Secondary Phase of Bulk Metallic Glass
Tracing Structural Dynamics in Metallic Glasses during Cryogenic Cycling
Ultrafast-calorimetry Experiments to Study Multistep Crystallization and Melting Pathways in Metals

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