Analysis of the Effects of Tandem Welding (Fronius TPS/i - TWIN) of S1100QL and S1300QL Steels.

IF 3.1 3区材料科学 Q3 CHEMISTRY, PHYSICAL

Materials Pub Date : 2025-05-31 DOI:10.3390/ma18112577

Mateusz Karczewski, Krzysztof Mroczka, Sławomir Parzych, Piotr Bała, Grzegorz Cios, Janusz Mikuła, Grzegorz Jeż

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引用次数: 0

Abstract

S1100QL and S1300QL steels are classified as fine-grained steels with a low-carbon martensitic structure. Tandem welding is a method of creating a joint by melting two electrode wires in a one-behind-the-other configuration. This article presents the effects of creating dissimilar joints, elements of varying thicknesses made from S1100QL and S1300QL steels. The analysis focused on temperature changes in the heat-affected zone (HAZ) during welding, as well as the macro and microstructure, and the properties of the joints created at welding speeds of 80, 90, and 100 cm/min. The shortest cooling time (t8/5) in the HAZ for S1300QL steel was 9.4 s, while the longest was 12.4 s. Thermal cycle simulations were performed for the analyzed materials, with a cooling time of 5 s. The test results demonstrated that TWIN welding was stable, and an optimum welding speed is 80 cm/min. The HAZ microstructure for the highest cooling speed (t8/5 = 5 s) of S1100QL steel contains, in addition to martensite, lower bainite, while S1300QL steel consists of martensite. Tempered martensite was also detected at slower cooling rates. For all speed variants, the impact energy is above 27 J at a test temperature of -40 °C. In turn, hardness tests showed that the base material for both steels has the highest hardness. However, the lowest hardness was found for the weld.

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S1100QL和S1300QL钢串联焊接（Fronius TPS/i - TWIN）效果分析。

S1100QL和S1300QL钢属于低碳马氏体组织的细晶钢。串联焊接是一种通过将两条焊丝在一个后面的另一个配置中熔化来创建接头的方法。本文介绍了用S1100QL和S1300QL钢制作不同接头、不同厚度元件的效果。分析的重点是焊接过程中热影响区（HAZ）的温度变化，以及在焊接速度为80、90和100 cm/min时形成的接头的宏观和微观组织和性能。S1300QL钢在热影响区内的冷却时间（8/5）最短为9.4 s，最长为12.4 s。对所分析的材料进行了热循环模拟，冷却时间为5 s。试验结果表明，TWIN焊接稳定，最佳焊接速度为80 cm/min。S1100QL钢在最高冷却速度（8/5 = 5 s）时的HAZ组织除含有马氏体外还含有下贝氏体，而S1300QL钢则由马氏体组成。在较慢的冷却速率下也检测到回火马氏体。对于所有速度变化，在-40℃的测试温度下，冲击能都在27j以上。硬度试验表明，两种钢的基材硬度最高。然而，焊缝硬度最低。

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

Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

5.80

自引率

14.70%

发文量

7753

审稿时长

1.2 months

期刊介绍： Materials (ISSN 1996-1944) is an open access journal of related scientific research and technology development. It publishes reviews, regular research papers (articles) and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Materials provides a forum for publishing papers which advance the in-depth understanding of the relationship between the structure, the properties or the functions of all kinds of materials. Chemical syntheses, chemical structures and mechanical, chemical, electronic, magnetic and optical properties and various applications will be considered.