Henning Wiche
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View article: Diffusion Barriers for Electrodes in Resistance Spot Welding of Aluminum Alloys—Investigation of Coating Characteristics Using Nanoindentation and SEM Analysis
Diffusion Barriers for Electrodes in Resistance Spot Welding of Aluminum Alloys—Investigation of Coating Characteristics Using Nanoindentation and SEM Analysis Open
Resistance spot welding of aluminum alloys causes the electrode materials to degrade rapidly. This is due to diffusion processes occurring between the sheet materials and the copper electrodes at process temperatures of up to 600 °C. This …
View article: Aluminium Diffusion in the Copper-Based Alloy CuCr1Zr as an Electrode for Resistance Spot Welding
Aluminium Diffusion in the Copper-Based Alloy CuCr1Zr as an Electrode for Resistance Spot Welding Open
The tracer diffusion of aluminium in the CuCr1Zr alloy was investigated, a material widely employed as an electrode in resistance spot welding. As a tracer layer, an alloy of Cu – 8.8 at.% Al was used, which was deposited by ion-beam sputt…
View article: Shielding and oxide reduction on steel surfaces using an Ar/H<sub>2</sub> non-thermal plasma jet
Shielding and oxide reduction on steel surfaces using an Ar/H<sub>2</sub> non-thermal plasma jet Open
This study explores the application of a dielectric barrier discharge (DBD) plasma jet in an Ar/H 2 gas flow for oxide reduction and shielding on E235 steel surfaces. We detail the construction of the non-thermal plasma jet system, includi…
View article: Increase of electrode life in resistance spot welding of aluminum alloys by the combination of surface patterning and thin-film diffusion barriers
Increase of electrode life in resistance spot welding of aluminum alloys by the combination of surface patterning and thin-film diffusion barriers Open
When resistance spot welding aluminum alloys, high electrode forces are required to reduce the electrical contact resistances between the electrodes and the sheet metals. The high contact resistances and the resulting thermal load cause ex…
View article: Beneficial use of hyperbaric process conditions on the welding of high-strength low alloy steels
Beneficial use of hyperbaric process conditions on the welding of high-strength low alloy steels Open
View article: Micromagnetic Properties of Powder Metallurgically Produced Al Composites as a Fundamental Study for Additive Manufacturing
Micromagnetic Properties of Powder Metallurgically Produced Al Composites as a Fundamental Study for Additive Manufacturing Open
Resource-efficient manufacturing with a high degree of freedom in terms of component shape can be realised through additive manufacturing. The focus can lie not only on the manufacturing process in terms of geometrical correctness, stabili…
View article: Beneficial use of hyperbaric process conditions for welding of aluminium and copper alloys
Beneficial use of hyperbaric process conditions for welding of aluminium and copper alloys Open
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 dist…
View article: Additive manufacturing of LMD nozzles for multi-material processing
Additive manufacturing of LMD nozzles for multi-material processing Open
Additive manufacturing of metals has become a leading technology for function-integrated and individualized components. Ongoing research leverages this technology from single-material parts to gradient compositions and multi-material combi…
View article: Spot weld bonding − process behavior of three-sheet steel stack‑ups and analysis strategies with online measuring methods
Spot weld bonding − process behavior of three-sheet steel stack‑ups and analysis strategies with online measuring methods Open
Due to the increased demands for reducing CO 2 emissions, improving fuel efficiency of modern vehicles has been continuously monitored. The body of a typical compact car design has a weight share of approx. 40%. In addition to increasing t…