Beneficial use of hyperbaric process conditions for welding of aluminium and copper alloys
| Autor: | Henning Wiche, S. Brechelt, Kai Treutler, Volker Wesling |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0209 industrial biotechnology
Work (thermodynamics) Materials science Mechanical Engineering Metallurgy Metals and Alloys article chemistry.chemical_element Aluminium -- Copper -- Joining -- Hyperbaric process -- Microstructure -- Penetration -- GMA-welding 02 engineering and technology Penetration (firestop) Welding 021001 nanoscience & nanotechnology Copper law.invention 020901 industrial engineering & automation Thermal conductivity chemistry Mechanics of Materials Aluminium law ddc:620 0210 nano-technology Penetration depth Ambient pressure |
| Popis: | The joining of components with as few weld layers as possible is an important aspect of weld seam design due to the resulting reduced manufacturing effort and reduced influence of thermal cycles on the base material as well as reduced distortion. For materials with good thermal conductivity, this is not easily possible. The energy density of the arc has been found to be the core parameter for determining the penetration. In the present work, it is shown how the use of a hyperbaric process environment (2 to 16 bar) allows an increase of the energy density of the arc and thus an increase of the penetration depth for selected aluminium and copper alloys. Furthermore, the effects of this novel approach on weld metal metallurgy are presented. It is shown that the penetration depth can be doubled by increasing the ambient pressure. Furthermore, a statistical model for the prediction of the penetration depth depending on the welding parameters will be presented. |
| Databáze: | OpenAIRE |
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