APPLICATION POSSIBILITIES OF THE S960 STEEL IN UNDERWATER WELDED STRUCTURES

IF 10.1 2区工程技术 Q1 ENGINEERING, MECHANICAL

Facta Universitatis-Series Mechanical Engineering Pub Date : 2022-07-28 DOI:10.22190/fume210722066t

J. Tomków, M. Landowski, G. Rogalski

引用次数: 8

Abstract

In this paper, the application possibilities of the ultra-high strength (UHSS) Domex 960 steel in the underwater welded structures are analyzed. In the research, the investigated material has been tested in bead-on-plate wet welding conditions with the usage of different heat input values, namely 0.63 kJ/mm, 0.72 kJ/mm and 0.93 kJ/mm. Specimens were performed by the manual metal arc (MMA) welding method with the usage of rutile covered electrodes. Firstly, the nondestructive visual testing (VT) was carried out. In the next step, the metallographic macro- and microscopic tests were performed. Finally, the hardness of the weld metal and heat-affected zone (HAZ) was measured by the Vickers HV10 method. The performed experiments allow the statement that the Domex 960 steel could be welded in a water environment. It also showed that increasing heat input leads to decreasing the hardness in HAZ by 30 HV10. It may result in decreasing the susceptibility to cold cracking during butt- and filet welding in the water environment.

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s960钢在水下焊接结构中的应用前景

分析了超高强度(UHSS) Domex 960钢在水下焊接结构中的应用可能性。在本研究中，采用不同的热输入值，分别为0.63 kJ/mm、0.72 kJ/mm和0.93 kJ/mm，对所研究材料进行了珠片湿焊试验。试样采用金红石覆盖电极的手工金属电弧(MMA)焊接方法进行。首先进行了无损视觉检测(VT)。在接下来的步骤中，进行了金相宏观和微观测试。最后，采用维氏HV10法测量焊缝金属的硬度和热影响区(HAZ)。所进行的实验表明，Domex 960钢可以在水环境中焊接。增加热输入可使热影响区硬度降低30 HV10。它可以降低水环境中对接焊和角焊的冷裂敏感性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Facta Universitatis-Series Mechanical Engineering ENGINEERING, MECHANICAL-

CiteScore

14.40

自引率

2.50%

发文量

审稿时长

6 weeks

期刊介绍： Facta Universitatis, Series: Mechanical Engineering (FU Mech Eng) is an open-access, peer-reviewed international journal published by the University of Niš in the Republic of Serbia. It publishes high-quality, refereed papers three times a year, encompassing original theoretical and/or practice-oriented research as well as extended versions of previously published conference papers. The journal's scope covers the entire spectrum of Mechanical Engineering. Papers undergo rigorous peer review to ensure originality, relevance, and readability, maintaining high publication standards while offering a timely, comprehensive, and balanced review process.