In the industrial production of metallic components by plastic deformation processes the introduction of the Tailor-Welded Blank (TWB) technological concept enabled, simultaneously, the production of stronger and light panels and the reduction of material waste which is an important step in nowadays environmental concerns. However, it is well known that existing welding technologies can induce significant differences in mechanical properties between the welds and the base materials. An important question in current investigation on TWBs formability is whether the weld bead, that can vary from very wide to very narrow according to the weld process in use, has a significant influence on the overall plastic behaviour of the welded blanks. In this investigation the formability behaviour of Laser steel welded blanks with narrow weld beads, and Friction Stir Welded (FSW) aluminium blanks, with wide weld beads will be compared. The base materials are two Steel Alloys (DC06 and DP600) and Aluminium Alloys (AA 5182-H111 and AA 6016-T4) very popular in automobilindustry. The TWBs were made from 1 mm thick plates by considering similar (DP600/DP600, DC06/DC06, AA 5182-H111/AA 5182-H111 and AA 6016-T4/AA 6016 T4) and dissimilar (DP600/DC06 and AA 6016-T4/AA 5182-H111) combinations of both types of base material. The formability behaviour of the TWBs was analysed by stamping axisymetrical cylindrical cups in a Deep-Drawing laboratorial testing device specially developed for a classical tensile test machine. The main reported results were the punch force curves and geometrical data from the Axissymetrical Cylindrical Results for formability tests in all type of welds are presented and compared in the paper.
Formability of steel and aluminium tailor welded blanks
Technical, Economic and Ecological Aspects, International Conference Welding and Materials, 2007 ; 667-676
Welding in the World ; 51 , Sh Tg
2007
10 Seiten, 10 Bilder, 1 Tabelle, 6 Quellen
Conference paper
English
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