Intermetallic Compound Layer Morphology and Distribution in Friction-Welded Steel–Aluminum Components

verfasst von: Christoph Kahra, Armin Piwek, Julius Peddinghaus, Kai Brunotte, Hans Jürgen Maier, Florian Nürnberger, Sebastian Herbst
Abstract: In this study, the morphology, distribution, and local thickness of the intermetallic compound layer (IMC-layer) in friction-welded steel-aluminum hybrid components used for Tailored Forming applications are investigated. By friction-welding of steel and aluminum, which is the first step in the Tailored Forming process chain, an IMC-layer in the joining zone is formed. In this study, the influence of friction-welding parameters, such as rotational speed, friction pressure, friction length, upsetting pressure, and upsetting time, on local IMC-layer thickness and distribution is examined. For characterization, a detailed analysis over the whole joining surface by means of scanning electron microscopy and a thorough statistical evaluation are employed. In the results, it is indicated that lower rotational speeds (700 rpm) in the friction phase result in more uniform and thinner IMC-layer (<0.5 μm), while higher speeds (1600 rpm) produce a thicker and more heterogeneous IMC- layer (up to 0.9 μm). Tensile tests show that specimens with thinner mean IMC-layer (0.17 μm) feature a higher tensile strength (244 MPa). The morphology and distribution of the IMC-layer over the cross section of the friction-welded specimen have a significant effect on the mechanical properties of the joint, with a uniform thin layer improving the tensile strength.
Organisationseinheit(en): Institut für Werkstoffkunde
Institut für Umformtechnik und Umformmaschinen
SFB 1153: Prozesskette zur Herstellung hybrider Hochleistungsbauteile durch Tailored Forming
Typ: Artikel
Journal: Advanced engineering materials
ISSN: 1438-1656
Publikationsdatum: 10.10.2024
Publikationsstatus: Elektronisch veröffentlicht (E-Pub)
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Allgemeine Materialwissenschaften, Physik der kondensierten Materie
Elektronische Version(en): https://doi.org/10.1002/adem.202401606 (Zugang: Offen)

BibTeX

@article{d8da8613a2a3424e825b9569460d8077,
title = "Intermetallic Compound Layer Morphology and Distribution in Friction-Welded Steel–Aluminum Components",
abstract = "In this study, the morphology, distribution, and local thickness of the intermetallic compound layer (IMC-layer) in friction-welded steel-aluminum hybrid components used for Tailored Forming applications are investigated. By friction-welding of steel and aluminum, which is the first step in the Tailored Forming process chain, an IMC-layer in the joining zone is formed. In this study, the influence of friction-welding parameters, such as rotational speed, friction pressure, friction length, upsetting pressure, and upsetting time, on local IMC-layer thickness and distribution is examined. For characterization, a detailed analysis over the whole joining surface by means of scanning electron microscopy and a thorough statistical evaluation are employed. In the results, it is indicated that lower rotational speeds (700 rpm) in the friction phase result in more uniform and thinner IMC-layer (<0.5 μm), while higher speeds (1600 rpm) produce a thicker and more heterogeneous IMC- layer (up to 0.9 μm). Tensile tests show that specimens with thinner mean IMC-layer (0.17 μm) feature a higher tensile strength (244 MPa). The morphology and distribution of the IMC-layer over the cross section of the friction-welded specimen have a significant effect on the mechanical properties of the joint, with a uniform thin layer improving the tensile strength.",
keywords = "aluminums, friction-weldings, intermetallic compound layers, intermetallic phases, steels, tailored forming",
author = "Christoph Kahra and Armin Piwek and Julius Peddinghaus and Kai Brunotte and Maier, {Hans J{\"u}rgen} and Florian N{\"u}rnberger and Sebastian Herbst",
note = "Publisher Copyright: {\textcopyright} 2024 The Author(s). Advanced Engineering Materials published by Wiley-VCH GmbH.",
year = "2024",
month = oct,
day = "10",
doi = "10.1002/adem.202401606",
language = "English",
journal = "Advanced engineering materials",
issn = "1438-1656",
publisher = "Wiley-VCH Verlag",
}