Fractal Dimension Characterization of Joint Surface Morphology on Dissimilar Friction Stir Lap Welding of Al/Mg Zhao, Yadong ; Luo, Yalong ; Zhang, Zhipeng ; Zhang, Haixiao ; Guo, Xuefeng ; Wang, Shuguang ; Cui, Hongbao ; Zhang, Yangming Abstract Publication: Materials Pub Date: November 2019 DOI: 10.3390/ma12233941 Bibcode: 2019Mate...12.3941Z