Tool penetration during friction stir spot welding of Al and Mg alloys
A Gerlich, P Su, TH North - Journal of Materials science, 2005 - Springer
A Gerlich, P Su, TH North
Journal of Materials science, 2005•SpringerThe mechanism of tool penetration during friction stir spot welding of Al-alloy and Mg-alloy
sheet materials is investigated and is explained as a progression of wear events, from mild
wear to severe wear and then to melt wear in material beneath the base of the rotating pin.
Melt wear can also occur under the rotating tool shoulder provided that sufficient penetration
of the upper sheet occurs during the spot welding operation. The highest temperatures
attained during FSW spot welding of Al 6111 and AZ91 base materials are close to the …
sheet materials is investigated and is explained as a progression of wear events, from mild
wear to severe wear and then to melt wear in material beneath the base of the rotating pin.
Melt wear can also occur under the rotating tool shoulder provided that sufficient penetration
of the upper sheet occurs during the spot welding operation. The highest temperatures
attained during FSW spot welding of Al 6111 and AZ91 base materials are close to the …
Abstract
The mechanism of tool penetration during friction stir spot welding of Al-alloy and Mg-alloy sheet materials is investigated and is explained as a progression of wear events, from mild wear to severe wear and then to melt wear in material beneath the base of the rotating pin. Melt wear can also occur under the rotating tool shoulder provided that sufficient penetration of the upper sheet occurs during the spot welding operation.
The highest temperatures attained during FSW spot welding of Al 6111 and AZ91 base materials are close to the solidus temperatures of each base material and correspond with 0.94T s (Al 6111) and 0.99 T s (AZ91) where T s is the solidus temperature of the material in degrees Kelvin.
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