%0 conference lecture %@ %A Ramos, F.D., Tier, M., da Silva, A.A.M., Rosendo, T., Mazzaferro, J.A.E., Mazzaferro, C.C.P., Reguly, A., Strohaecker, T.R., dos Santos, J.F. %D 2008 %J 8th International Conference on Trends in Welding Research %T The Influence of the Tool Profile in Friction Stir Spot Welding of the Aluminum Alloy AA6181-T4 %U %X