Löten von Aluminiummatrix‐Verbundwerkstoffen mit modifizierten Löttechnologien

Wielage, B.; Hoyer, I.; Weis, Sebastian

doi:10.1002/mawe.200600099

Cited by 6 publications

(4 citation statements)

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“…The brazing process is commonly carried out in vacuum furnaces. Because of their good formability and the low raw material cost, pure copper foils are used as filler metal [54]. The difference in the electrochemical potentials of copper and stainless steel in contact with electrolytes leads to corrosion effects [55].…”

Section: Brazing Of Heat Exchangersmentioning

confidence: 99%

Research trends in brazing and soldering

Weis¹,

Fedorov²,

Elßner³

et al. 2017

Przegląd Spawalnictwa

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Brazing has a long tradition at the Institute of Material Science and Engineering of the University of Chemnitz, Germany. During the last years, comprehensive and innovative knowledge in brazing and soldering technologies were generated. Originating from high-temperature brazing, topics like metal-ceramic and light metal brazing, ultrasound assisted joining processes through to brazing of metal matrix composites were examined. In addition, new topics like joining by nanoparticles or corrosion behavior of brazed heat exchangers are in the focus of research. Prof. Bernhard Wielage managed the institute for 22 years. Today, Prof. Guntram Wagner introduces new topics like friction stir welding and continues the activities in brazing.Keywords: brazing; soldering; heat exchangers; brazing of metal-ceramic joints; soldering with diamond particles StreszczenieTradycje związane z tematyką lutowania twardego w Instytucie Materiałoznawstwa i Inżynierii Uniwersytetu w Chemnitz (Niemcy) są długie. W ciągu ostatnich lat wygenerowano kompleksową i innowacyjną wiedzę dotyczącą technologii lutowania miękkiego i twardego. Zajmowano się problematyką badawczą wywodzącą się od lutowania wysokotemperaturowego, taką m.in. jak: lutowanie twarde metali lekkich z ceramiką i wspomaganie procesu spajania ultradźwiękami w lutowaniu kompozytów metalowych. Obecnie przedmiotem badań są nowe zagadnienia, takie jak: spajanie nanocząsteczkami oraz zachowanie odporności korozyjnej wymienników ciepła lutowanych na twardo. Profesor Bernhard Wielage zarządzał Instytutem przez ostatnie 22 lata. Obecnie, nowy Dyrektor Instytutu Profesor Guntram Wagner zajmuje się takimi zagadnieniami, tjak np. zgrzewaniem tarciowym z wymieszaniem materiału zgrzeiny (FSW) i kontynuuje prace badawcze związane z lutowaniem twardym.Słowa kluczowe: lutowanie twarde; lutowanie miękkie; wymienniki ciepła; lutowanie materiałów różnoimiennych metal-ceramika; lutowanie miękkie z cząstkami diamentu

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Section: Brazing Of Heat Exchangersmentioning

confidence: 99%

Research trends in brazing and soldering

Weis¹,

Fedorov²,

Elßner³

et al. 2017

Przegląd Spawalnictwa

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“…Vorangegangene Untersuchungen haben gezeigt, dass eine sehr gute Anbindung zwischen den Verstärkungspartikeln und der Matrix erreicht wird [9,[13][14][15][16][17]. Für die Erzielung optimaler mechanischer Eigenschaften der Lötverbindung ist dies von großer Bedeutung.…”

Section: Gefügeausbildungunclassified

Soldering of temperature‐sensitive, aluminium based Composites

Wielage

Grund

Hoyer

et al. 2011

Materialwissenschaft Werkst

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Das Fügen von temperaturempfindlichen Aluminiummatrix-Verbundwerkstoffen erfordert geeignete Lotwerkstoffe und angepasste Fügetechnologien. Dabei existieren unterschiedliche Lösungsansätze. Einerseits zeichnen sich die entwickelten, partikelverstärkten Zinnbasislote durch niedrige Verarbeitungstemperaturen und gesteigerte mechanische Eigenschaften aus. Andererseits ermöglichen die entwickelten, ultraschallunterstützten Löttechnologien mit induktiver bzw. widerstandsbasierter Erwärmung den Einsatz von Zinkbasisloten. Die notwendige Löttemperatur wird dabei lokal in der Fügezone erzeugt. Die Kombination mit der Ultraschalleinleitung stellt eine flussmittelfreie Benetzung der Fügeflächen sicher.Schlüsselwörter: Aluminiummatrix-Verbundwerkstoffe / Ultraschalllöten / Induktionslöten / Widerstandslöten / partikelverstärkte Weichlote / The joining of temperature-sensitive aluminium matrix composites requires appropriate fillers and adapted joining technologies. Thereby different solutions are possible. On the one hand, the developed, particulate-reinforced tin based fillers are featured by a low process temperature and increased mechanical properties. On the other hand, the developed, ultrasound supported soldering technologies (inductive respectively resistance based heating) allow the use of zinc based fillers. The required heat input is realised locally. In combination with an ultrasound process a fluxless wetting is obtained.

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“…The tendency to form brittle intermetallics can be reduced by an adapted alloying concept of the filler. To join aluminum alloys with steel Al-Si [9,10,11] and Zn-Al [3,12,13] based fillers are commonly used. Both types of fillers have specific disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Joining of Aluminum Matrix Composites and Stainless Steel by Arc Brazing

Elßner

Weis

Wagner

2015

MSF

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To enlarge the field of application of aluminum matrix composites (AMC) suitable joining technologies are necessary. Especially dissimilar joints like between AMC and stainless steel are of interest. In this work the arc brazing of this material combination is investigated. A new filler based on the ternary system Al-Ag-Cu is used. The results of wetting tests of the base filler and adapted variants are described and discussed. Wetting angles and microstructure of the interfaces are regarded.

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Löten von Aluminiummatrix‐Verbundwerkstoffen mit modifizierten Löttechnologien

Cited by 6 publications

References 0 publications

Research trends in brazing and soldering

Research trends in brazing and soldering

Soldering of temperature‐sensitive, aluminium based Composites

Joining of Aluminum Matrix Composites and Stainless Steel by Arc Brazing

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