The present investigation aims at studying the cold stamping of friction stir welded AA1050 aluminium thin sheets (1.5 mm in thickness), for motomotive applications. A preliminary investigation has allowed to define the rotational and welding speed values leading to friction stir welded joints with high mechanical properties, in terms of ductility and flow stress. Then, formability of the welded joints, in terms of forming limit curves at the onset of necking, was evaluated using the hemispherical punch test. The effect of the welding line orientation on formability was also taken into account. A microstructural investigation has allowed to relate the mechanical properties of joints to microstructure. Finally, the validity of such investigations was proven by performing cold stamping experiments on friction stir welded blanks up to the obtaining of the desired geometry.
Stamping of FSWed AA1050 aluminium thin sheets for motomotive components
SIMONCINI, MICHELA
2013-01-01
Abstract
The present investigation aims at studying the cold stamping of friction stir welded AA1050 aluminium thin sheets (1.5 mm in thickness), for motomotive applications. A preliminary investigation has allowed to define the rotational and welding speed values leading to friction stir welded joints with high mechanical properties, in terms of ductility and flow stress. Then, formability of the welded joints, in terms of forming limit curves at the onset of necking, was evaluated using the hemispherical punch test. The effect of the welding line orientation on formability was also taken into account. A microstructural investigation has allowed to relate the mechanical properties of joints to microstructure. Finally, the validity of such investigations was proven by performing cold stamping experiments on friction stir welded blanks up to the obtaining of the desired geometry.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
