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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Aluminum Alloys, Processing and Characterization
Presentation Title TIG Welding of Dissimilar High-Strength Aluminum Alloys 6061 and 7075 with Nano-treated Filler Wires
Author(s) Narayanan Murali, Xiaochun Li
On-Site Speaker (Planned) Narayanan Murali
Abstract Scope Arc welding of dissimilar high-strength aluminum alloys is a major challenge in the automotive and aerospace industries due to differences in intrinsic material parameters and compositions. However, successful joining can lead to desirable combinations of material properties. To solve this problem, nanoparticles were loaded into AA6061 and AA7075 filler wires to fabricate nano-treated fillers, which were used to successfully weld AA6061 and AA7075. Neither weldment exhibited defects such as hot tearing or crater cracking, and both weld metals were observed to contain equiaxial grains smaller than 30 Ám. The principal mechanisms behind the observed microstructures originate from nanoparticle interactions during the welding process, as they affect the solidification behavior of the weld metal and modify eutectic secondary phases that traditionally lead to dendritic grain morphologies. The promising results of these dissimilar high-strength aluminum alloy welds show nano-treated fillers have much potential in welding systems that are traditionally difficult to weld.
Proceedings Inclusion? Planned: Light Metals
Keywords Aluminum, Joining, Nanotechnology

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Al-Sm Alloys Under Far-from-Equilibrium Conditions
Anodization Compatibility of Eutectic Aluminum-Cerium Alloys
Characterization of the Microstructure of Al-Mg Alloy Matrix Syntactic Foam by Three-dimensional Analysis
Comparison of Simulation and Real Life to Set Up Holistic Approach for Extrusion Process
Computational Simulation of Nanoparticle Distributions in Metal Matrix Composite Casting Processes
Effect of Extrusion Process on Mechanical, Welding and Corrosion Behaviour of 6XXX Series of Aluminium Alloys
Effect of Heat Treatment on the Microstructure and Mechanical Properties of LB-PBF AlSi10Mg and Scalmalloy
Effect of Minor Additives to Al-Zn-Mg Alloys on Welding and Corrosion Performance for Building Constructions
Effect of Thermomechanical Processing on Strengthening of the 5181 Alloy (with 0.03 %Sc) Sheets for Preservation of 40 % Improved Strength Compared with 5083
Effects of Ultrasonic Melt Processing on Microstructure, Mechanical Properties and Electrical Conductivity of Hypereutectic Al-Si, Al-Fe and Al-Ni Alloys with Zr Additions
Experimental and Numerical Examinations Regarding the Material Flow of Combined Rolling Extrusion Process
Fatigue and Failure Analysis of an Additively Manufactured Contemporary Aluminum Alloy
High-throughput Aluminum Alloy Discovery Using Laser Additive Manufacturing
Influence of the Quench Rate and Trace Elements on 6XXX Alloys
Introductory Comments: Aluminum Alloys, Processing and Characterization
Investigation of Weld Quality for Friction Stir Welding of Extrued 6XXX Series Aluminium Alloys
Manufacturing A206 Aluminum Alloy by Step Sand Casting: Effect of Solidification Time on Mechanical and Surface Properties of the Cast Samples Using Experimental and Simulation Results
Microchemistry Evolution for 8xxx Alloys by Homogenization
Microstructural Evolution of Ultra-fine Grained (UFGs) Aluminum in Tribological Contacts
Microstructure and Mechanical Properties of a Precipitation-hardened Al-Mn-Zr-Er Alloy
Microstructure Evolution of an Al-Fe-Ni Alloy with Zr and Sc Additions Upon Different Cooling Rates during Solidification for Improving the Mechanical and Electrical Conductivity Properties
Phase Formation of Mo- and Cr-rich Compounds in an Al-Si Cast Alloy
Review of Retrogression Forming and Reaging for AA7075-T6 Sheet
Shear Assisted Processing and Extrusion of Aluminum Alloy 7075 Tubing at High Speed
Shear Assisted Processing and Extrusion of Thin-walled AA 6063 Tubing
Simulations of Wear-induced Microstructural Evolution in Nanocrystalline Aluminum
The Combined Method for Producing Long Products from Aluminium and Aluminium Alloys
The Corrosion Behavior of 5xxx and 6xxx Aluminum Alloys with Trace Calcium
The Effect of Al3Er Particles on the Structure and Mechanical Properties of an Al-Mg Alloy
The Effect of Rare Earth Mischmetal on the High Temperature Tensile Properties of an A356 Aluminum Alloy
Thermal Analysis of the Solidification Behavior of AA7075 Containing Nanoparticles
Thermal Properties of Hybrid Al-Cu-Components Produced by Combining Powder Pressing and Semi-solid Forming Strategies
TIG Welding of Dissimilar High-Strength Aluminum Alloys 6061 and 7075 with Nano-treated Filler Wires
Understanding the Effect of Quench Delay and Alloy Chemistry on Various 6000 Series Alloys Systems

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