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Creep forming of very thin AlMgSc sheets for aeronautical applications

: Zimmermann, Frieder; Brosius, Alexander; Beyer, Eckhard; Standfuß, Jens; Jahn, Axel; Banke, David

Fulltext ()

Procedia manufacturing 15 (2018), pp.1008-1015
ISSN: 2351-9789
International Conference on Metal Forming <17, 2018, Toyohashi>
Journal Article, Conference Paper, Electronic Publication
Fraunhofer IWS ()
sheet forming; aluminum; AlMgSc; creep forming; spring-back; hot forming; thin-walled; double-curved; design of experiments

A new developed forming method was used to shape very thin and double-curved AlMgSc sheets (AA5024, sheet thickness s = 0.4 mm). In this time-dependent process, elevated temperatures and a certain pressure are significant to achieve adequate forming results. This paper deals with the influence of the pressure/temperature/time-cycle on the forming behavior of mentioned thin-walled AlMgSc sheets, especially with regard to the properties of the formed parts. Furthermore, the formability of a higher number of blanks in one forming operation was investigated to reduce the production time.