Original scientific paper

Effect of the post weld heat treatment on the microstructure of the underwater wet welding SS400 steel

N. Muhayat ; Mechanical Engineering Department, Universitas Sebelas Maret, Surakarta, Indonesia
S. Yasinta ; Mechanical Engineering Department, Universitas Sebelas Maret, Surakarta, Indonesia
A. R. Prabowo ; Mechanical Engineering Department, Universitas Sebelas Maret, Surakarta, Indonesia
Y. C. N. Saputro ; UPTB Solo Technopark Technical Unit on Regional Development Planning Board, Surakarta, Indonesia
. Triyono orcid.org/0000-0003-4562-0628 ; Mechanical Engineering Department, Universitas Sebelas Maret, Surakarta, Indonesia

Abstract

The effects of the post weld heat treatment (PWHT) on the microstructure and hardness of the underwater wet welding (UWW) SS400 steel have been evaluated. The UWW was performed using Shielded Metal Arc Welding (SMAW) in water depth of 5.0 m, while PWHT was carried out on underwater welded specimen with temperature of 660 oC for 75 minutes. The result showed that the PWHT caused increasing the grain size of the microstructure and decreasing in hardness.

Keywords

SS400 steel; post weld heat treatment; underwater wet welding; microstructure; hardness

Hrčak ID:

319796

URI

https://hrcak.srce.hr/319796

Publication date:

1.1.2025.

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