Microstructural investigation of SPA-C steel sheets used in railway vehicles in resistance spot welding

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Ferik E., Akkaş N., Kılıç R., İlhan E., Aslanlar S.

Springer Tracts In Modern Physics, sa.186, ss.77-82, 2017 (SCI-Expanded)

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1007/978-3-319-46601-9
  • Dergi Adı: Springer Tracts In Modern Physics
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, zbMATH
  • Sayfa Sayıları: ss.77-82
  • Marmara Üniversitesi Adresli: Hayır

Özet

This paper presents an experimental study on resistance spot welding of
SPA-C steel sheets used in side wall and roof in rail vehicles. SPA-C steel sheets
having 2.3 mm thicknesses were joined by using resistance spot welding as lap
joint. A timer and current controlled resistance spot welding machine having 120
kVA capacity and a pneumatic application mechanism with a single lever was
used to prepare the specimens. Welding periods were chosen as 5, 10, 15, 20, 25
and 30 cycles and also welding currents were increased from 6 kA up to 14 kA by
rise of 0,5 kA. The electrode force was kept constant at 6 kN. The micro and macro-structures of prepared welding specimens were investigated by means of an optical microscope and scanning electron microscope (SEM) in order to see the joinability of SPA-C steel sheets by resistance spot welding