Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 1582 |
| Seiten (von - bis) | 1-16 |
| Seitenumfang | 16 |
| Fachzeitschrift | Metals |
| Jahrgang | 10 |
| Ausgabenummer | 12 |
| Publikationsstatus | Veröffentlicht - 26 Nov. 2020 |
Abstract
The reinforcement of light metal components with steel allows to increase the strength of the part while keeping the weight comparatively low. Lateral angular co-extrusion (LACE) offers the possibility to produce hybrid coaxial profiles consisting of steel and aluminum. In the present study, the effect of the process parameters temperature, contact pressure and time on the metallurgical bonding process and the development of intermetallic phases was investigated. Therefore, an analogy experiment was developed to reproduce the process conditions during co-extrusion using a forming dilatometer. Based on scanning electron microscopy analysis of the specimens, the intermetallic phase seam thickness was measured to calculate the resulting diffusion coefficients. Nanoindentation and energy dispersive X-ray spectroscopy measurements were carried out to determine the element distribution and estimate properties within the joining zone. The proposed numerical model for the calculation of the resulting intermetallic phase seam width was implemented into a finite element (FE) software using a user-subroutine and validated by experimental results. Using the subroutine, a numerical prediction of the resulting intermetallic phase thicknesses is possible during the tool design, which can be exploited to avoid the weakening of the component strength due to formation of wide intermetallic phase seams.
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in: Metals, Jahrgang 10, Nr. 12, 1582, 26.11.2020, S. 1-16.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Characterization and modeling of intermetallic phase formation during the joining of aluminum and steel in analogy to co-extrusion
AU - Behrens, Bernd Arno
AU - Maier, Hans Jürgen
AU - Klose, Christian
AU - Wester, Hendrik
AU - Thürer, Susanne Elisabeth
AU - Heimes, Norman
AU - Uhe, Johanna
N1 - Funding Information: Acknowledgments: The results presented in this paper were obtained within the Collaborative Research Center 1153 “Process chain to produce hybrid high performance components by Tailored Forming” in the subproject A01, funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)—252662854. The authors thank the German Research Foundation (DFG) for their financial support of this project.
PY - 2020/11/26
Y1 - 2020/11/26
N2 - The reinforcement of light metal components with steel allows to increase the strength of the part while keeping the weight comparatively low. Lateral angular co-extrusion (LACE) offers the possibility to produce hybrid coaxial profiles consisting of steel and aluminum. In the present study, the effect of the process parameters temperature, contact pressure and time on the metallurgical bonding process and the development of intermetallic phases was investigated. Therefore, an analogy experiment was developed to reproduce the process conditions during co-extrusion using a forming dilatometer. Based on scanning electron microscopy analysis of the specimens, the intermetallic phase seam thickness was measured to calculate the resulting diffusion coefficients. Nanoindentation and energy dispersive X-ray spectroscopy measurements were carried out to determine the element distribution and estimate properties within the joining zone. The proposed numerical model for the calculation of the resulting intermetallic phase seam width was implemented into a finite element (FE) software using a user-subroutine and validated by experimental results. Using the subroutine, a numerical prediction of the resulting intermetallic phase thicknesses is possible during the tool design, which can be exploited to avoid the weakening of the component strength due to formation of wide intermetallic phase seams.
AB - The reinforcement of light metal components with steel allows to increase the strength of the part while keeping the weight comparatively low. Lateral angular co-extrusion (LACE) offers the possibility to produce hybrid coaxial profiles consisting of steel and aluminum. In the present study, the effect of the process parameters temperature, contact pressure and time on the metallurgical bonding process and the development of intermetallic phases was investigated. Therefore, an analogy experiment was developed to reproduce the process conditions during co-extrusion using a forming dilatometer. Based on scanning electron microscopy analysis of the specimens, the intermetallic phase seam thickness was measured to calculate the resulting diffusion coefficients. Nanoindentation and energy dispersive X-ray spectroscopy measurements were carried out to determine the element distribution and estimate properties within the joining zone. The proposed numerical model for the calculation of the resulting intermetallic phase seam width was implemented into a finite element (FE) software using a user-subroutine and validated by experimental results. Using the subroutine, a numerical prediction of the resulting intermetallic phase thicknesses is possible during the tool design, which can be exploited to avoid the weakening of the component strength due to formation of wide intermetallic phase seams.
KW - Aluminum-steel compound
KW - Co-extrusion
KW - Intermetallic phases
KW - Nanoindentation
KW - Tailored forming
UR - http://www.scopus.com/inward/record.url?scp=85096824202&partnerID=8YFLogxK
U2 - 10.3390/met10121582
DO - 10.3390/met10121582
M3 - Article
AN - SCOPUS:85096824202
VL - 10
SP - 1
EP - 16
JO - Metals
JF - Metals
SN - 2075-4701
IS - 12
M1 - 1582
ER -