Vol.23, No.2, 2023, pp. 123–128
UDC:

INFLUENCE OF PLASMA TRANSFERRED ARC WELDING PARAMETERS ON THE OBTAINED MICROSTRUCTURE OF 316L COATING

Aleksandar Maslarević1*, Gordana Bakić2, Bratislav Rajičić1, Nenad Milošević2, Vesna Maksimović3

1) University of Belgrade, Innovation Centre of the Faculty of Mechanical Engineering, Belgrade, SERBIA

*email: amaslarevic@mas.bg.ac.rs

2) University of Belgrade, Faculty of Mechanical Engineering, Belgrade, SERBIA

3) Vinča Institute of Nuclear Sciences, Belgrade, SERBIA

 

Abstract

The paper describes the surfacing technology for coating of high-alloyed austenitic stainless steel 316L on the steel S235JR base material. Coatings were applied by plasma transferred arc welding process. The 5 samples were made using different welding currents while other welding parameters were constant. Metallographic analysis of the obtained samples is used to establish a correlation between the microstructural constituents and the applied welding current in the surfacing process. According to this it was possible to determine the optimal parameters of coating surfacing. The filler material was in the form of powder, while its characterization was performed by scanning electron microscopy, and the characterization of the obtained coatings by optical microscopy.

Keywords: plasma transferred arc (PTA), microstructure, coating hardness, steel 316L, welding current

full article (1.45 MB)