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The tilt angle tool on Aluminum A5083 and Copper C11000 joint processed by Friction Stir Welding (FSW) was observed in this study. The rotation speed and transverse speed were used as a parameter process for 2500 rpm and 30 mm/min, respectively. The tensile test and microstructure observation were carried out to determine the tensile strength and metal flow on Al-Cu joint, respectively. The result shows that the highest tensile strength was in 2o tilt angle tool for 105 MPa. Its fracture surface was more close to Al and formed brittle formation.The metal flows of Al-Cu with 0o and 2o were not homogeneous and formed an agglomeration of Cu particle to Al surface. Material Science Research India www.materialsciencejournal.org ISSN: 0973-3469, Vol.16, No.(1) 2019, Pg. 56-61 CONTACT Jupri jup.ri11@yahoo.com Department of Mechanical Engineering, Bengkalis State Polytechnic, 28711, Bengkalis-

Mechanical and Microstructure Properties on Al-Cu Joint processed by Friction Stir Welding: The effect of Tilt Angle Tool