Weldability of austempered rail steel using the flash-butt process

ARABACI U., Turan S.

MATERIALS TESTING, vol.63, no.7, pp.662-667, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 63 Issue: 7
  • Publication Date: 2021
  • Doi Number: 10.1515/mt-2020-0105
  • Journal Name: MATERIALS TESTING
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.662-667
  • Keywords: Bainitic rail steels, pearlitic rail steels, flash butt welding, micro structure properties, mechanical properties, BAINITE, CEMENTITE, GROWTH
  • Gazi University Affiliated: Yes

Abstract

In this study, bainitic microstructure was formed via heat treatment on R260 rail steel, which is generally used in railways. Bainitic steel, which is considered more advantageous than current rail steel, was welded by flash butt welding, which is often used for joining rails and the mechanical and microstructure of the samples were thenexamined and compared. Bainitic structural steel obtained by austempering heat treatment with normal rail steel was welded by flash butt welding. Flashbutt welding parameters were kept constant during the experiment. The welding capabilities of the joints were compared and the results were evaluated. It was determined that the bainite structure obtained as a result of austempering heat treatment changes the microstructural properties of the samples and affects the mechanical values of the joints.