Effect of Mg and Si Content in Aluminum Alloys on Friction Surfacing Processing Behavior

Ehrich, Jonas; Roos, Arne; Hanke, Stefanie

doi:10.1007/978-3-030-05864-7_45

Cited by 4 publications

(5 citation statements)

References 10 publications

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“…The coatings were deposited using a custom-designed friction surfacing machine from H. Loitz Robotik (Hamburg, Germany) at the department Solid State Materials Processing within the Institute of Materials Mechanics at Helmholtz Center Geesthacht, Germany. Details of the FS processing and resulting coating properties have been published in Reference [ 20 ]. Cast studs of the three alloys were deposited onto a substrate of AA2024 aluminum alloy.…”

Section: Methodsmentioning

confidence: 99%

“…This results in coatings containing supersaturated solid solution phases, non-equilibrium precipitates, or martensite [ 2 , 18 , 19 ]. Mechanical processing, additionally, also causes non-soluble phases to break up or become spherical [ 3 , 20 ]. Such microstructural changes have been shown to be beneficial to the wear resistance of a material and result in less wear in FS-processed material compared to a conventional equilibrium microstructure [ 9 , 11 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

“…The application of FS to cast Al-based alloys with high Si content has not yet been studied in detail. The feasibility and suitable processing parameters were presented by the authors in a previous study [ 20 ]. It can be expected that the Si phase, which is not soluble in the Al-base solid solution, will be modified in its morphology and redistributed.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Microstructure Modification by Friction Surfacing on Wear Behavior of Al Alloys with Different Si Contents

et al. 2022

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In this work, Al alloys with 6.6%, 10.4%, and 14.6% Si were deposited as thick coatings by Friction Surfacing (FS), resulting in grain refinement and spheroidization of needle-shaped eutectic Si phase. Lubricated sliding wear tests were performed on a pin-on-disc tribometer using Al-Si alloys in as-cast and FS processed states as pins and 42CrMo4 steel discs. The chemical composition of the worn surfaces was analyzed by X-ray photoelectron spectroscopy (XPS). The wear mechanisms were studied by scanning electron microscopy (SEM) and focused ion beam (FIB), and the wear was evaluated by measuring the weight loss of the samples. For the hypoeutectic alloys, spheroidization of the Si phase particles in particular leads to a significant improvement in wear resistance. The needle-shaped Si phase in as-cast state fractures during the wear test and small fragments easily detach from the surface. The spherical Si phase particles in the FS state also break away from the surface, but to a smaller extent. No reduction in wear due to FS was observed for the hypereutectic alloy. Here, large bulky primary Si phase particles are already present in the as-cast state and do not change significantly during FS, providing high wear resistance in both material states. This study highlights the mechanisms and limitations of improved wear resistance of Si-rich Al alloys deposited as thick coatings by Friction Surfacing.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Microstructure Modification by Friction Surfacing on Wear Behavior of Al Alloys with Different Si Contents

et al. 2022

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“…It is reported that the deposition efficiency is a function of energy input for a fixed volume and affects the deposited material. The deposition geometry is also reported as a function of the process parameters and temperature evolution during friction surfacing [109,110]. From the direction of friction surfacing, 6xxx series alloys as the tool material are more explored than 6xxx series alloys as the substrate material [109][110][111][112][113].…”

Section: Friction Surfacingmentioning

confidence: 99%

“…The deposition geometry is also reported as a function of the process parameters and temperature evolution during friction surfacing [109,110]. From the direction of friction surfacing, 6xxx series alloys as the tool material are more explored than 6xxx series alloys as the substrate material [109][110][111][112][113]. In this review, the use of the 6xxx series as the substrate material is considered.…”

Section: Friction Surfacingmentioning

confidence: 99%

Surface Modification of 6xxx Series Aluminum Alloys

et al. 2022

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Due to their superior mechanical properties, formability, corrosion resistance, and lightweight nature, 6xxx series aluminum (Al) alloys are considered as a promising structural material. Nevertheless, the successful application of these materials depends on their response to the external environment. Recently, designers considered the surface properties an equally important aspect of the component design. Due to this concern, these alloys are subjected to varieties of surface modification methodologies. Many methodologies are explored to modify the 6xxx series Al alloys surfaces effectively. These methods are anodizing, plasma electrolytic oxidation (PEO), cladding, friction stir processing, friction surfacing, melting, alloying, and resolidification using high energy beams, etc. This review work discusses some of these methods, recent research activities on them, important process variables, and their role on the final properties of the surfaces.

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Influence of Mg content in Al alloys on processing characteristics and dynamically recrystallized microstructure of friction surfacing deposits

Ehrich

Roos

Klusemann

et al. 2021

Materials Science and Engineering: A

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Effect of Mg and Si Content in Aluminum Alloys on Friction Surfacing Processing Behavior

Cited by 4 publications

References 10 publications

Effects of Microstructure Modification by Friction Surfacing on Wear Behavior of Al Alloys with Different Si Contents

Effects of Microstructure Modification by Friction Surfacing on Wear Behavior of Al Alloys with Different Si Contents

Surface Modification of 6xxx Series Aluminum Alloys

Influence of Mg content in Al alloys on processing characteristics and dynamically recrystallized microstructure of friction surfacing deposits

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