Original scientific paper

Effect of the repair welding process on the microstructure and hardness of the T-JOINT S355J2+N steel

M. F. A. Sabana ; Mechanical Engineering Department, Universitas Sebelas Maret, Surakarta, Indonesia
N. Muhayat ; Mechanical Engineering Department, Universitas Sebelas Maret, Surakarta, Indonesia
. Triyono orcid.org/0000-0003-4562-0628 ; Mechanical Engineering Department, Universitas Sebelas Maret, Surakarta, Indonesia

Abstract

The purpose of this research is to determine effect of the repair welding process on the microstructure and hardness of the T-joint S355J2+N steel. This process was carried out by moving the welding position 10 mm from the initial position using Gas Metal Arc Welding (GMAW) with AWS ER-706S filler metal at a diameter of 1.2 mm. The result showed that the repair welding process causes changes in the microstructure due to repeated heating, thereby increasing the grain size of the microstructure with a decrease in hardness.

Keywords

steel S355J2+N; GMAW; repair welding; microstructure; hardness

Hrčak ID:

300994

URI

https://hrcak.srce.hr/300994

Publication date:

3.7.2023.

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