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JWJ > Volume 33(2); 2015 > Article
Journal of Welding and Joining 2015 April;33(2) :56-61.
Published online April 30, 2015.
Characterization of resistance spot welded Al5052/DP590 dissimilar materials and processing optimization
Beom-Ji Jo*,**, Ji-Sun Kim**, Hyo-Sang Yoo**, In-Ju Kim**, Seong-Hui Lee*, Young-Gon Kim**
*Dept. of Advanced Materials Science & Engineering, Mokpo University, Mokpo 534-729, Korea
**Korea Institute of Industrial Technology, Gwangju 500-460, Korea
Correspondence: Young-Gon Kim  Email:
  Published online April 30, 2015
IRW(Inverter Resistance Welding) process and DSW(Delta-spot welding) process for dissimilar materials of DP590 and Al5052 were performed to evaluate the welding quality and mechanical properties. IRW experiment was carried out with changing the welding current. The other welding parameters such as pressure force, weld time, squeezing time and holding time were fixed. On the anther hand, DSW experiment was performed using the process tape at welding current of 11.5kA. The other conditions were same as IRW conditions. The various testes such as shear tensile strength, nugget diameters, EDS, SEM and cross-sectional observation for weld zone was performed. As a result, IMC(Inter Metallic Compound) thickness at 11.5kA was thinner than those of 9.5kA and 10.5kA conditions. In addition, thined IMC layer was observed when high electric current apply to the materials(DP590 and Al5052) in a short time throught dissimilar resistance spot welding controling welding conditions. The relationship between the thickeness of IMC and current intensity was after discussed.
Keywords: Intermetallic compound | DP590 | Al5052 | Shearing stress | Weld nugget | Resistance spot welding | Delta-Spot welding
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