Investigations on small-scaled welded structures of austenitic stainless steel

Reisgen, Uwe; Willms, Konrad; Schäfer, Johannes; Türker, Mehmet; Hegger, Josef; Claßen, Martin; Feldmann, Markus; Kopp, Markus

doi:10.4149/km_2019_6_397

Cited by 4 publications

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Damit ist das Bolzenschweißen in der Lage, eine erhebliche Zeitersparnis gegenüber der additiven Fertigung von bolzen‐ bzw. stabähnlichen Stahlteilen durch formgebendes Schweißen [28] oder Pin‐Schweißens [29, 30] (Bild 3d) zu erzielen.…”

Section: Untersuchungen Zur Umsetzbarkeit Des Verfahrens – Proof Of Cunclassified

Konzeptionierung eines praxisorientierten 3D‐Druckverfahrens für den Verbundwerkstoff Stahlbeton (AMoRC)

Claßen

Claßen²,

Sharma

2020

Beton und Stahlbetonbau

View full text Add to dashboard Cite

Mit extrusionsbasierten 3D‐Druckmethoden herstellbare unbewehrte Betonbauteile sind nur in seltenen Fällen für den Einsatz in realen Bauwerken geeignet, da sie spröde versagen und unzureichende Tragfähigkeiten aufweisen. Daher werden neue Verfahren benötigt, die die Integration von Stahlbewehrung in den Betondruckprozess und damit die additive Fertigung des Verbundwerkstoffs Stahlbeton ermöglichen. Die Konzeptionierung eines praxisorientierten 3D‐Druckverfahrens für Stahlbeton, das sog. „Additive Manufacturing of Reinforced Concrete“ (AMoRC), ist daher Gegenstand des vorliegenden Beitrags. Im AMoRC‐Verfahren werden konfektionierte Stahlbewehrungsstäbe abschnittweise mit einem Lichtbogenbolzenschweißverfahren zu einer dreidimensionalen Bewehrungsstruktur gefügt und simultan mit einem Beton‐Extrusionsprozess umdruckt. Der vorliegende Beitrag beschreibt die Entwicklung des Verfahrens und erste Voruntersuchungen zur Umsetzbarkeit.

show abstract

Section: Untersuchungen Zur Umsetzbarkeit Des Verfahrens – Proof Of Cunclassified

Konzeptionierung eines praxisorientierten 3D‐Druckverfahrens für den Verbundwerkstoff Stahlbeton (AMoRC)

Claßen

Claßen²,

Sharma

2020

Beton und Stahlbetonbau

View full text Add to dashboard Cite

show abstract

“…Reisgen et al [14] investigated the metallographic and mechanical properties of ER308LSi pins on AISI 304 sheets. They identified six different zones in the pin microstructure, which can be related to the different stages of the pin welding process and its associated solidification and reheating (T-gradient) history.…”

Section: Introductionmentioning

confidence: 99%

“…Most studies in literature focus on the effects of pin reinforcement on the overall joint properties [1][2][3][4][5][6][8][9][10][11] while only limited research was conducted, and is available on the performance and characteristics of the (single) pins themselves [12][13][14][15]. Moreover, the majority of research was conducted on (stainless) steel, in some cases titanium pins [1, 3-5, 8, 9, 14], but only few results on aluminium pins are available [4,6,12].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and microstructural characterization of aluminium micro-pins realized by cold metal transfer

Schneider-Bröskamp¹,

Schnall²,

Birgmann³

et al. 2022

Preprint

View full text Add to dashboard Cite

Advanced and reliable joining technologies for ultra-light weight structures combining aluminium with carbon fibre reinforced plastics (CFRP) are of great interest for aerospace industries. The combination of superior mechanical properties and low density offer a wide range of possible application. The European collaborative research project ADALFIC (Advanced Aluminium Fittings in CFRP tubes) focuses on the design, analysis, manufacturing and testing of ultra-lightweight CFRP tubes with integrated aluminium end fittings. These aluminium end fittings are equipped with very small, minimum-mass, spike-head pins realized by Fronius' cold-metal-transfer (CMT) Print welding technology. These pins are optimized for form-locked joints between aluminium and CFRP components. In this work the aluminium pins are characterized on a macroscopic and microscopic level using light optical microscopy and hardness testing. To evaluate the behavior of the pins under mode II load conditions a new shear testing method for pins was developed and implemented. With this test equipment the maximum shear force and ultimate shear strength of individual pins was measured at different temperatures and heat treatment conditions. The failure modes and fracture surfaces were analyzed via scanning electron microscopy. The results demonstrate that CMT aluminium pins are a viable, flexible and lightweight option for form-locked aluminium-CFRP joints.

show abstract

Mechanical and microstructural characterization of aluminium micro-pins realized by cold metal transfer

Schneider-Bröskamp

Schnall

Birgmann

et al. 2023

Int J Adv Manuf Technol

View full text Add to dashboard Cite

The European collaborative research project ADALFIC (Advanced Aluminium Fittings in CFRP tubes) focuses on the design, analysis, manufacturing and testing of ultra-lightweight carbon fiber reinforced plastic (CFRP) tubes with integrated aluminium end fittings. Reliable joining technologies for combining aluminium and CFRP are of great interest since the combination of superior mechanical properties and low density offer a wide range of applications. One such approach is the use of form locking micro-pins on the surface of the metallic part enabling the joint between metal and CFRP by mechanical interlocking. In this work Fronius’ Cold-Metal-Transfer (CMT) Print welding technology was used to generate very small, minimum-mass, spike-head pins, which are optimized for form-locked joints between aluminium and CFRP components. The aluminium pins are characterized on a macroscopic and microscopic level using light optical microscopy and hardness testing. To evaluate the behavior of the pins under mode II load conditions a new shear testing method for pins was developed and implemented. With this test equipment the maximum shear force and ultimate shear strength of individual pins were measured at different temperatures and heat treatment conditions. The failure modes and fracture surfaces were analyzed via scanning electron microscopy. The results demonstrate that the novel spike-head CMT aluminium pins can withstand considerable shear forces, especially in the peak aged condition. This makes them a viable, flexible and lightweight option for form-locked aluminium-CFRP joints.

show abstract

Investigations on small-scaled welded structures of austenitic stainless steel

Cited by 4 publications

References 15 publications

Konzeptionierung eines praxisorientierten 3D‐Druckverfahrens für den Verbundwerkstoff Stahlbeton (AMoRC)

Konzeptionierung eines praxisorientierten 3D‐Druckverfahrens für den Verbundwerkstoff Stahlbeton (AMoRC)

Mechanical and microstructural characterization of aluminium micro-pins realized by cold metal transfer

Mechanical and microstructural characterization of aluminium micro-pins realized by cold metal transfer

Contact Info

Product

Resources

About