Umformende Herstellung von Al/Mg‐Werkstoffverbunden

Neugebauer, Reimund; Glaß, R.; Popp, M.; Nickel, Dominik

doi:10.1002/mawe.200900483

Cited by 12 publications

(4 citation statements)

References 3 publications

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“…In addition, there is an opportunity to specifically examine the composite-enhancing effect of a multitude of parameters [4,5,6]. Compared to spin extrusion, the specimens used here are distinguished through a costefficient geometry assuring an economic and statistically ensured analysis of the parameters.…”

Section: Execution and Results Of Lateral Extrusionmentioning

confidence: 99%

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Characterization of contact tensions during incremental forming of metal composites

et al. 2010

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The realization of light weight design of components with local, load adapted properties is a major goal in the development of new manufacturing and processing methods of metal composite materials. A main challenge in the manufacturing of compounds by forming consists in the realization of the necessary conditions for the initiation of the diffusion process and the generation of metallic bonding. A combination of high contact tensions with specific forming conditions such as temperature distribution and surface enlargement is required in order to initiate the diffusion of atoms during the forming process. The article presents FEM-simulation and investigation of contact and forming conditions of aluminum-magnesium composites with respect to an incremental forming method. The characteristics of the compound materials, surface enlargement and local forming conditions as well as temperature gradients are important factors for the diffusion processes. The investigation of co ntact conditions during compound formation is a prerequisite for the further design of forming methods and the base for new approaches of generating composites of two light metal alloys into products with favorable properties such as high specific strength and corrosion resistance

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Section: Execution and Results Of Lateral Extrusionmentioning

confidence: 99%

“…A micro structural examination of the interface (Fig. 6) demonstrated that a homogeneous interface is formed between magnesium and aluminum under the given test conditions [5] [6]. …”

Section: Figure 5: Analogy Experiments -Lateral Extrusionmentioning

confidence: 98%

Characterization of contact tensions during incremental forming of metal composites

et al. 2010

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“…Eine weitere Möglichkeit bietet die Ausnutzung des Synergieeffekts bei Werkstoffverbunden 2 . Ein Beispiel hierfür ist die Kombination des leichtesten Konstruktionswerkstoffes Magnesium (ρ = 1,7 g/cm 3 ) mit dem korrosionsbeständigen Standardwerkstoff Aluminium (ρ = 2,7 g/cm 3 ) 3 . Gängige Verfahren zur Herstellung dieser Materialkombination sind beispielsweise das Strangpressen 4 oder das Sprengplattieren 5 .…”

Section: Introductionunclassified

Herstellung und Umformbarkeit walzplattierter Magnesium(AZ31)-Aluminium(1050)-Verbunde

Schlögl

Planitzer

Harrer

et al. 2011

Berg Huettenmaenn Monatsh

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Eine Optimierungsmöglichkeit im Zusammenfassung: stofflichen Leichtbau liegt im Austausch des gängigen Werkstoffes Aluminium mit dem um rund 30 % leichteren Magnesium. Dabei stellt die hohe Korrosionsneigung des Magnesiums die größte Problematik dar. Ein möglicher Lö-sungsansatz ist das in dieser Arbeit behandelte Walzplattieren mit dünnen, korrosionsbeständigen Aluminiumblechen. Es wird die Herstellung des Mg(AZ31)-Al(1050)-Verbundes erläutert, wobei der Fokus auf der Verarbeitbarkeit des hexagonal aufgebauten Magnesiums liegt. Ergebnisse aus Warmwalzversuchen ermöglichen es, optimierte Plattierparameter für den Umformprozess festzulegen. Technologische Werkstoffprüfverfahren zur Bestimmung der Haftfestigkeit und des Umformvermögens (z. B. Schälversuche) zeigen, dass unter den ermittelten Bedingungen feste, gut verformbare Werkstoffverbunde entstehen. Production and Formability of Roll Bounded Magnesium(AZ31)-Aluminium(1050)-CompositesA possibility to reduce weight in lightweight conAbstract: structions is the usage of magnesium instead of the typically used leight-weight material aluminium. Magnesium is more than 30 % lighter than aluminium. However, the biggest problem of magnesium is the bad corrosion behaviour. One approach of corrosion protection is coating with aluminium by roll-bounding. This paper gives an introduction into the assembly process of roll bounded Mg(AZ31)-Al(1050) composites and a parameter optimisation by analysing the adhesion. An explanation of the testing methods is also given. Abb. 1: Gleitebenen in Magnesium (hexagonale Kristallstruktur) 8 Damit ein Werkstoffverbund den Sprung aus der akademischen Forschung in die kommerzielle Anwendung schafft, ist neben einer ökonomischen Fertigung auch die spätere Korrespondenzautor:

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“…Als Referenz diente ein bei 300 8C fließgepresster Aluminium-Magnesium-Verbund ohne Zwischenschicht. Die Ergebnisbewertung wurde anhand der Homogenität der Zwischenschicht, der Anzahl von Fehlstellen, der Schichtausbildung und der Anbindung an die beiden Grundwerkstoffe für den erzielten Verbund durchgeführt [4]. Der beim Querfließpressen auftretende inhomogene Werkstofffluss, der experimentell anhand der gerasterten Proben übereinstimmend zur Finite-ElementeMethode nachgewiesen werden konnte, hat zur Folge, dass die Zwischenfolie nach der Umformung verhältnisgleich zur Oberflächenvergrößerung ausgedünnt wird, Bild 3.…”

Section: Introductionunclassified

Influence of the contact area and diffusion conditions during the fabrication of aluminum – magnesium – compounds

Neugebauer

Glaß

Popp

et al. 2010

Materialwissenschaft Werkst

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The increasing demand for efficiency and energy savings can be satisfied by innovative lightweight construction, especially in the automotive and mechanical engineering industry. One approach is the use and development of magnesium alloys for industrial applications. Due to the high affinity for oxygen magnesium has a low corrosion resistance with limits its application considerably. In order to ensure the appropriate corrosion protection, conventional methods cannot be used, but cladding can supply the required protection. The goal is to create a protective layer resistant to mechanical damage. All the layers in such a composite have to withstand bending and torsion loads, but to realize this, there must be a material bond between the lamination layers. In order to determine the essential conditions for the bond formation a lateral extrusion device was used. A bond initially of aluminum and magnesium alloys was formed between semi-finished products and the data generated will be presented in this document, with special focus on how an added inter layer compounds influenced the bond.

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Umformende Herstellung von Al/Mg‐Werkstoffverbunden

Cited by 12 publications

References 3 publications

Characterization of contact tensions during incremental forming of metal composites

Characterization of contact tensions during incremental forming of metal composites

Herstellung und Umformbarkeit walzplattierter Magnesium(AZ31)-Aluminium(1050)-Verbunde

Influence of the contact area and diffusion conditions during the fabrication of aluminum – magnesium – compounds

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