About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Deformation-induced Microstructural Evolution during Solid Phase Processing: Experimental and Computational Studies
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Presentation Title |
Process Effects on the Heterogenous Microctructure of an Impact Welded Interface |
Author(s) |
Anupam Vivek, Brian Thurston, Anil Singh, Manny Gonzalez, Glenn S Daehn |
On-Site Speaker (Planned) |
Glenn S Daehn |
Abstract Scope |
A high speed, oblique impact between metallic pieces can weld them together. This phenomenon, termed impact or collision welding is accompanied by jetting of the impacting surfaces and severe plastic deformation of the material at and near the interface. During this process, strain rates at the interface can easily exceed 1000/s and the metallic bonds are formed in the solid state when the right conditions are met. Adiabatic heating from plastic deformation can also lead to melting. A heterogeneous microstructure consisting of recrystallized grains, adiabatic shear bands, deformation twins and even amorphous pockets may result at the interface. Here, novel process - structure observations and relations of a wide variety of material combinations, including Al-Fe, Cu-Ti, and Cu-Ag impact welds are presented. Effects of process parameters such as impact angle, impact velocity, material thickness and boundary conditions on the microstructure are investigated through novel experiments, characterization and modeling. |
Proceedings Inclusion? |
Planned: |
Keywords |
Joining, Aluminum, Iron and Steel |