Welding between Aluminum Alloy and Steel Sheets by Using Transition Joints
- PDF / 9,558,610 Bytes
- 14 Pages / 593.972 x 792 pts Page_size
- 90 Downloads / 175 Views
JMEPEG https://doi.org/10.1007/s11665-020-04595-2
Welding between Aluminum Alloy and Steel Sheets by Using Transition Joints P. Matteis, A. Gullino, F. DÕAiuto, C.M. Puro, and G. Scavino (Submitted July 9, 2019; in revised form November 23, 2019) Hybrid car bodies can be used to exploit the comparative advantages of steels and aluminum alloys for car lightweighting. This development hinges on the deployment of effective hybrid joining technologies. Hybrid welding with transition joints between 1.35-mm-thick DP1000 dual-phase steel sheets and 2.5-mm-thick 6106 aluminum alloy sheets is here investigated. The transition joints are fabricated by explosion welding, with a titanium interlayer. The aluminum alloy sheet, the transition joint and the steel sheet are butt joined by arc welding, with appropriate fillers. The overall tensile strength of the hybrid joint is about two-thirds of the tensile strength of the homologous arc-welded joint fabricated by using the same aluminum alloy sheet, and it is not significantly affected by corrosion in still synthetic seawater. Keywords
aluminum, automotive and transportation, joining, steel, welding
1. Introduction Due to ever more stringent regulation on carbon dioxide emissions and fuel economy, car manufacturers are trying new ways to decrease the car-body weight, without loss of performance and avoiding excessive cost. One possibility is the introduction of hybrid car bodies, whereby parts made with different materials, and especially with steels and aluminum alloys, are joined together (Ref 1, 2). Hybrid construction allows to decrease the car-body weight at a moderate cost, by using aluminum alloys only where they can achieve the maximum benefit. Moreover, it can be more effective than full aluminum alloy construction as it regards the total carbon footprint, because it allows to use aluminum only where the weight reduction and the ensuing lower tailpipe emissions are sufficient to offset the much higher energy consumption and pollution that are associated with the production of aluminum alloys, in respect of steels. Car bodies are usually built by joining several parts, which in turn are manufactured by sheet metal forming (deep drawing or hot stamping), starting from steel or aluminum alloy sheets. This article is an invited submission to JMEP selected from presentations at the Symposium ‘‘Joining and Related Technologies,’’ belonging to the topic ‘‘Processing’’ at the European Congress and Exhibition on Advanced Materials and Processes (EUROMAT 2019), held September 1-5, 2019, in Stockholm, Sweden, and has been expanded from the original presentation. P. Matteis, A. Gullino, and G. Scavino, DISAT Department, Politecnico di Torino (Turin Technical University), 10129 Turin, Italy; F. DÕAiuto, GML Department, Centro Ricerche FIAT (FIAT Research Center), 10135 Turin, Italy; and CBMM Europe BV, 1077 XV Amsterdam, The Netherlands; and C.M. Puro, GML Department, Centro Ricerche FIAT (FIAT Research Center), 10135 Turin, Italy. Contact e-mail: [email protected].
Journal of
Data Loading...
