A Numerical Study on Co-Extrusion to Produce Coaxial Aluminum-Steel Compounds with Longitudinal Weld Seams
The use of lightweight materials is one possibility to limit the weight of vehicles and to reduce CO2 emissions. However, the mechanical properties and weight-saving potential of mono-materials are limited. Material compounds can overcome this challenge by combining the advantages of different mater...
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MDPI AG
2018-09-01
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| Series: | Metals |
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| Online Access: | http://www.mdpi.com/2075-4701/8/9/717 |
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| author | Bernd-Arno Behrens Christian Klose Alexander Chugreev Norman Heimes Susanne Elisabeth Thürer Johanna Uhe |
| author_facet | Bernd-Arno Behrens Christian Klose Alexander Chugreev Norman Heimes Susanne Elisabeth Thürer Johanna Uhe |
| author_sort | Bernd-Arno Behrens |
| collection | DOAJ |
| description | The use of lightweight materials is one possibility to limit the weight of vehicles and to reduce CO2 emissions. However, the mechanical properties and weight-saving potential of mono-materials are limited. Material compounds can overcome this challenge by combining the advantages of different materials in one component. Lateral angular co-extrusion (LACE) allows the production of coaxial semi-finished products consisting of aluminum and steel. In this study, a finite element model of the LACE process was built up and validated by experimental investigations. A high degree of agreement between the calculated and experimentally determined forces, temperatures, and the geometrical shape of the hybrid profiles was achieved. In order to determine suitable parameters for further extrusion experiments, the influence of different process parameters on material flow and extrusion force was investigated in a numerical parametric study. Both the temperature and extrusion ratio showed a significant influence on the occurring maximum extrusion force as well as the material flow inside the LACE tool. The maximum force of 2.5 MN of the employed extrusion press was not exceeded. An uneven material flow was observed in the welding chamber, leading to an asymmetric position of the steel rod in the aluminum matrix. |
| first_indexed | 2024-12-11T18:09:50Z |
| format | Article |
| id | doaj.art-6453aaca608549438e1c3e639e3ae933 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-11T18:09:50Z |
| publishDate | 2018-09-01 |
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| series | Metals |
| spelling | doaj.art-6453aaca608549438e1c3e639e3ae9332022-12-22T00:55:36ZengMDPI AGMetals2075-47012018-09-018971710.3390/met8090717met8090717A Numerical Study on Co-Extrusion to Produce Coaxial Aluminum-Steel Compounds with Longitudinal Weld SeamsBernd-Arno Behrens0Christian Klose1Alexander Chugreev2Norman Heimes3Susanne Elisabeth Thürer4Johanna Uhe5Institut für Umformtechnik und Umformmaschinen (Forming Technology and Machines), Leibniz Universität Hannover, 30823 Garbsen, GermanyInstitut für Werkstoffkunde (Materials Science), Leibniz Universität Hannover, 30823 Garbsen, GermanyInstitut für Umformtechnik und Umformmaschinen (Forming Technology and Machines), Leibniz Universität Hannover, 30823 Garbsen, GermanyInstitut für Umformtechnik und Umformmaschinen (Forming Technology and Machines), Leibniz Universität Hannover, 30823 Garbsen, GermanyInstitut für Werkstoffkunde (Materials Science), Leibniz Universität Hannover, 30823 Garbsen, GermanyInstitut für Umformtechnik und Umformmaschinen (Forming Technology and Machines), Leibniz Universität Hannover, 30823 Garbsen, GermanyThe use of lightweight materials is one possibility to limit the weight of vehicles and to reduce CO2 emissions. However, the mechanical properties and weight-saving potential of mono-materials are limited. Material compounds can overcome this challenge by combining the advantages of different materials in one component. Lateral angular co-extrusion (LACE) allows the production of coaxial semi-finished products consisting of aluminum and steel. In this study, a finite element model of the LACE process was built up and validated by experimental investigations. A high degree of agreement between the calculated and experimentally determined forces, temperatures, and the geometrical shape of the hybrid profiles was achieved. In order to determine suitable parameters for further extrusion experiments, the influence of different process parameters on material flow and extrusion force was investigated in a numerical parametric study. Both the temperature and extrusion ratio showed a significant influence on the occurring maximum extrusion force as well as the material flow inside the LACE tool. The maximum force of 2.5 MN of the employed extrusion press was not exceeded. An uneven material flow was observed in the welding chamber, leading to an asymmetric position of the steel rod in the aluminum matrix.http://www.mdpi.com/2075-4701/8/9/717co-extrusionFEMtailored formingaluminum-steel compound |
| spellingShingle | Bernd-Arno Behrens Christian Klose Alexander Chugreev Norman Heimes Susanne Elisabeth Thürer Johanna Uhe A Numerical Study on Co-Extrusion to Produce Coaxial Aluminum-Steel Compounds with Longitudinal Weld Seams Metals co-extrusion FEM tailored forming aluminum-steel compound |
| title | A Numerical Study on Co-Extrusion to Produce Coaxial Aluminum-Steel Compounds with Longitudinal Weld Seams |
| title_full | A Numerical Study on Co-Extrusion to Produce Coaxial Aluminum-Steel Compounds with Longitudinal Weld Seams |
| title_fullStr | A Numerical Study on Co-Extrusion to Produce Coaxial Aluminum-Steel Compounds with Longitudinal Weld Seams |
| title_full_unstemmed | A Numerical Study on Co-Extrusion to Produce Coaxial Aluminum-Steel Compounds with Longitudinal Weld Seams |
| title_short | A Numerical Study on Co-Extrusion to Produce Coaxial Aluminum-Steel Compounds with Longitudinal Weld Seams |
| title_sort | numerical study on co extrusion to produce coaxial aluminum steel compounds with longitudinal weld seams |
| topic | co-extrusion FEM tailored forming aluminum-steel compound |
| url | http://www.mdpi.com/2075-4701/8/9/717 |
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