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Meeting MS&T23: Materials Science & Technology
Symposium Light Metal Technology
Presentation Title Investigating Hydrogen Porosity in Aluminum Laser Welding Using a Three-dimensional Cellular Automaton Model
Author(s) Nicole Trometer, Michael Moodispaw, Wayne Cai, Teresa J Rinker, Shardul Kamat, Zachary Velasco, Alan Luo
On-Site Speaker (Planned) Nicole Trometer
Abstract Scope Laser welding is used to weld commercially pure aluminum alloys for battery applications in the automotive industry. During welding, porosity is frequently present in the welds and is believed to be due to hydrogen entrapment. Laser welding is a high-temperature process, so hydrogen can dissolve into the aluminum weld pool. However, due to the low solubility of hydrogen in solid aluminum, the supersaturated hydrogen forms gas porosity in the welds during solidification. In addition, during welding of anodized aluminum, the anodized layer is broken up and causes oxide to be present. The oxide films can then act as heterogeneous nucleation sites for the gas porosity. The effect of aluminum oxide on porosity in aluminum welds was studied with LECO analysis of hydrogen content, scanning electron microscope, energy dispersive spectroscopy, and microcomputed tomography. A three-dimensional cellular automaton model was adopted that can simulate hydrogen porosity nucleation and evolution in aluminum welding.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Case of Update on 330kA Aluminium Potline in China
A Machine-learning Assisted Optimization Approach and Microstructure Characterization Method for Laser Powder Bed Fusion
Assesment of the Mechanical Properties of an AlMg7Cu2 Alloy with TiBZrMoV Alloying at Different T6 Solution Heat Treatment Conditons and Modeling of Its Behavior by Continuum Mechanics Approach
Characterisation of A201 Alloy Produced by Low Pressure Die Casting into Resin Sand Moulds
Development of Al-Ce-(Fe)-(Mg) Alloys for Elevated Temperature and High Strength Applications
Effect of Erbium and Europium Addition on Microstructure and Mechanical Properties of A356, A206 and A201 Alloys
Effect of Melt Thermal-rate Treatment on Microstructure and Mechanical Properties in Al-Zn-Mg-Cu Alloy Billets Fabricated by Direct-chill Casting
Effect of Zr-Er-Y L12 Phase on Precipitation Behavior of Al-Zn-Mg Alloy
Effects of Pass Strains of Multi-directional Forging and Additive Cold Rolling of Pure Ti on the Microstructural Evolution and Mechanical Properties
Elastic-plastic Approach on Transformation of LPSO Phases in a Mg-RE Alloy by Nanoindentation
Evolution of Spheroidal α-AlFeSi Phase in 1200 Aluminum by 3D Visualization Using FIB-SEM
H-1: Numerical Simulation of Effect of Process Parameters on Solidification Structure in Titanium Alloy TC4 Vacuum Arc Remelting Process
Importance of Runner Design in the Reproducibility of Tensile Tests
Improved Strength in Mg-Al Dissimilar Impact Welding by Surface Nanocrystallization of Mg Alloy Sheet
Inductance-based Structural Self-sensing, as Shown for Sensing Shape-changing Deformation In Aluminum
Influence of Ce, Ni and Cu on Castability and Mechanical Properties of Al Piston Alloys
Investigating Hydrogen Porosity in Aluminum Laser Welding Using a Three-dimensional Cellular Automaton Model
Investigation on the Grain Refinement of Mg-Al Alloys by Superheating Process Using Rapid Solidification Process
Mechanical Property Comparison of Al11Si Wheels Grain Refined by Ti, Nb and Nucleant 1582
Mechanical Property of Nb Grain Refined AlSi11 Alloy
Observation of Impact Deformation and Fracture on Severe Plastic Deformed Ti by Using Synchrotron Radiation
Optimization of Die Casting Process with Various Oxygen Concentration
Phase Stability in Laser Melted Microstructures of Al-X (X=Zr, Nb, V) Alloys
Physics-constrained, Inverse Design of High-temperature, High-strength, Creep-resistant Printable Al Alloys Using Machine Learning Methods
Precipitate-strengthened Micromechanical Behaviors of Magnesium Alloy Under Cyclic Loading
Production of Titanium Wire from Scrap Material Using Continuous Extrusion Machine
Role of Alloying Elements and Solidification Conditions on the Evolution of Fe-rich Intermetallic Phases in Recycled Al-Si Alloys with Higher Fe
Role of Guinier-Preston Zones in Achieving High Strength-ductility in a New Mg-Zn-Al-Ca-Mn-Ce Sheet Alloy
Role of Interfaces on the Orientation Dependent Spheroidization Response of á-colonies in Ti-6Al-4V Alloy
Selective Laser Melting of a TiB2/Al-Cu-Mg-Ni-Sc Composite
Solidification Evolution, Microstructure and Tensile Properties of Al-Mg-Sc Alloys
Study on the Improvement of the Mechanical Properties Heavy Commercial Vehicle’s Wheel by the Molten-forged on the A356 Alloy
The Beneficial Effects of Ce Additions on High-Fe Secondary Al-Si Casting Alloys
The Myth on the Pore Formation in Aluminum Casting on the Alloying with Rare Earth Elements
Through-thickness Heterogeneity in the Mechanical Properties of Hot Rolled AA7075-T651

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