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    • Keywords


      Automotive steels; resistance spot welding; mechanical properties; nucleus geometry.

    • Abstract


      In this study, mechanical properties of resistance spot welding of DP450 and DP600, galvanized and ungalvanized automotive sheets have been investigated. The specimens have been joined by resistance spot welding at different weld currents and times. Welded specimens have been examined for their mechanical, macrostructure and microstructure properties. Depending on the weld current and time, effects of zinc coating on tensile properties, microhardness values as well as microstructure nugget geometry and nucleus size ratio have been investigated. X-ray diffraction analysis has been used to investigate the phase that formed at the joint interface. Result of the experiment show that nugget diameter, indentation depth and tensile load-bearing capacity are affected by weld parameters. Coating prevents full joining at low parameters. Microhardness increased in heat-affected zone and weld metal.

    • Author Affiliations


      Ibrahim Sevim1 Fatih Hayat2 Mustafa Kemal Kulekci3

      1. Department of Mechanical Engineering, Engineering Faculty, Mersin University, 33343 Ciftlikkoy, Mersin, Turkey
      2. Metallurgy Materials Engineering Department, Engineering Faculty, Karabuk University Baliklarkayasi, Karabuk, Turkey
      3. Faculty of Tarsus Technical Education, Mersin University, 33480 Tarsus, Turkey
    • Dates

  • Bulletin of Materials Science | News

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      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
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      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

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      Posted on July 25, 2019

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