2026-04-11T21:10:41Zhttps://ebiltegia.mondragon.edu/oai/requestoai:ebiltegia.mondragon.edu:20.500.11984/11192024-04-15T15:46:40Zcom_20.500.11984_460col_20.500.11984_469
eBiltegia
advisor
Hurtado Hurtado, Iñaki
advisor
Herrero Dorca, Nuria
author
Echaniz Hernández, Erik
2018-11-06T15:18:34Z
2018-11-06T15:18:34Z
2016
https://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=126068
https://hdl.handle.net/20.500.11984/1119
Weight reduction is the most cost-effective mean to improve fuel economy and greenhouse gas emissions from the transportation sector. Combining steel and aluminum in a hybrid structure will implement the integrated load-supporting of steel with the advantages of aluminum in weight reduction. However, due to the highly differing physical and mechanical properties, metallurgical bonds between these materials are difficult to achieve with traditional welding methods. These differences in properties lead to the formation of hard and brittle intermetallic compounds along the transition line which will significantly decrease the mechanical properties of the joining area.
Production of hybrid components by thixoformig of aluminum on steel is a promising method to manufacture near net shape components with good mechanical properties in a single process step. This process allows joining dissimilar materials in semisolid state at lower temperatures than traditional welding methods, causing a decrease in thickness of the intermetallic layer. In this work, the mount of the front cradle of the car was manufactured in different aluminum alloys and joined to a S355JH2 quality steel tube by thixo transverse forging method.
The first part of the dissertation focuses on design and simulation of an automotive hybrid structure and the development of a semi-industrial thixoforming cell. Influence of the main processing parameters such as, solid fraction, mold temperature, compaction time and punch
speed are studied. In order to determine the optimum process parameters a thorough mechanical and metallographic analysis of the manufactured components is carried out. The second part of the dissertation deals with fundamental research on the formation and evolution of intermetallic phases when joining of AlSiMg alloys to raw and coated steel, at different joining temperatures in the semisolid range. The results reveal that quality hybrid
components can be achieved with this forming method.
eng
© Erik Echaniz Hernández
Tecnología de materiales
Ensayo de materiales
Procesos industriales
Propiedades de materiales
Development of Aluminim/Steel hybrid structures by semisolid forming
http://purl.org/coar/resource_type/c_db06
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URL
http://ebiltegia.mondragon.edu/xmlui/bitstream/20.500.11984/1119/1/Tesis%20Eric%20Echaniz.pdf
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Tesis Eric Echaniz.pdf
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Tesis Eric Echaniz.pdf.txt