1. Material Processes: Welding Research.
2. Materials: Composites, Plastics, Metals, exotics, etc.
3. Following the welding process, certain alloys (e.g., aluminum) lose their mechanical properties, and therefore:
a. How to weld in these situations?
b. How can the strength be returned to the basic materials (hardening efforts, cold processing, etc.)?
4. Is it possible to give an electrical interpretation to the vibration of the molecules, which is created as a result of the thermal energy and causes the decomposition of the intermolecular forces?
P. S. Assuming that the electrical charge between the ions and the molecules, and between themselves (dipoles, ion bonds, H- bonding, van der Waals forces: Keesom, Debye and London) cause to electrical bond (force).
Basically the mixture of base metal to weld metal is mostly depends on welding electrodes.
But Power source also affect the fusion zone.
Higher current generate more heat and melt more metal than lower current.
Some metal have low melting point so it requires low current like aluminium required less current than ferrous materials.
Dear Jacob,
quite a lot of issues in your question...
Welding is the combination of many physical-chemical effects as welding power, thermal transfer, gaseous atmosphere, thermal properties of both base material and welding consumables.
Only the deep knowledge of the materials you need to weld and the performances you want to obtain will result in the most suitable welding strategy (if any)... If you are interested on Aluminum alloys - the main problem in arc welding is surface oxidation that pollute the weld zone and prevent from a stable straight electric arc. MIG is discouraged. TIG is more performing. Gas protection is essential. Pulsed arc are recommended to reduce thermal input and reduce the oxide formation. Definition of the right WPS is fundamental and could depend also on size and shape of your welding zone.
Hope this answer could help,
Best regards,
Simone
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