PSI- Issue 9

Mohammad Jameel Zedan et al. / Procedia Structural Integrity 9 (2018) 37–46 Mohammad Jameel Zedan, et al./ Structural Integrity Procedia 00 (2018) 000–000

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force, the welding current, and the welding time. In dissimilar alloys, the weld nugget diameter determines the welding strength. In this study, the largest weld nugget diameter 9.75 mm showing the highest welding strength equal to 3210 N. The pullout failure mode has been presented. By increasing the electrode force from 1500 to 2400 N, the thickness of IMC layer decreases from 4.5 to 2 μm. Hence, the strength of the joint has been improved from 2040 to 3210 N. Through IMC layer, Fe amount increases toward the steel side and aluminum element amount increases toward the aluminum side. Acknowledgments Support from Mechanical Department, Baghdad University, Mechanical and Materials Departments in Kufa University, Baghdad Technical College is gratefully appreciated. Al Mukhtar, A. M., Biermann, H., Huebner, P., Henkel, S. 2009. Fatigue Crack Propagation Life Calculation in Welded Joints. International Conference on CRACK PATHS 2009, 391–397. Al Mukhtar, A., H. Biermann, P. Hübner, S. 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