مقاله جوشکاری با عنوان :

Metallurgy and mechanical performance of AZ31 magnesium alloy friction spot welds

Leonardo Contri Campanellia,∗, Uceu Fuad Hasan Suhuddinb, Armando Ítalo Sette Antoniallia,
Jorge Fernandez dos Santosb, Nelson Guedes de Alcântaraa, Claudemiro Bolfarini

چکیده مقاله:

Microstructural features were studied along the cross-section of AZ31 magnesium alloy friction spot
welded joints made using different combinations of welding parameters. Static lap shear testing was performed
to evaluate the mechanical properties of the welded joints, and the resulting fracture mechanisms
and crack propagation paths were fully examined. Failure load is optimized when the welding procedure
is performed with the combination of parameters that maximizes the material mixing, the size of fully
metallurgical bonding and simultaneously minimizes the vertical displacement of hook region. The welds
demonstrate three failure modes during lap shear testing: through the weld and non-circumferential
pull-out modes, in which crack propagation crosses the recrystallized zone, and circumferential pull-out
mode, around this zone.