Influence of SAW Flux Ingredients on Chemical Compositions of Weldments of Duplex Steel-2205

IF 1.6 4区材料科学 Q2 Materials Science Transactions of The Indian Institute of Metals Pub Date : 2024-06-24 DOI:10.1007/s12666-024-03383-z

Deepak Gupta, Amit Bansal, Sandeep Jindal

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Abstract

Duplex stainless steel (DSS) mainly consists of ferrite and austenite. DSS finds wide uses in offshore applications, due to its admirable mechanical properties and great corrosion resistance. The chemical and physical characteristics of the weld metal (WM) are significantly impacted by the flux compositions. In the present work, the submerged arc welding (SAW) of DSS was achieved by using an electrode wire (ER-308L). The resulting physiochemical compositions, C, Mn, Ni, Cr, Mo and W of the WM, have been examined by utilizing 21 designed fluxes. The SAW fluxes in the current study are formulated using the limited mixture design approach. Using the extreme vertices design method, 21 compositions of flux are designed and the effect of flux mixtures has been studied. Regression models were developed for the submerged arc weld of DSS-2205 by considering the different flux constituents and their binary combinations. From the study, it has been concluded that among the individual flux mixtures, Al₂O₃ is the most significant mixture and SiO₂ is the second most significant flux mixture. The most significant binary mixture to change the content of WM’s composition is SiO₂MgO. Regression mathematical models have been checked at a 95% significance level by using an analysis of variance (F test).

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SAW 焊剂成分对双相钢-2205 焊接件化学成分的影响

双相不锈钢（DSS）主要由铁素体和奥氏体组成。由于双相不锈钢具有良好的机械性能和耐腐蚀性，因此在近海应用中得到广泛使用。焊缝金属 (WM) 的化学和物理特性受焊剂成分的影响很大。在本研究中，使用电极焊丝（ER-308L）实现了 DSS 的埋弧焊（SAW）。通过使用 21 种设计的焊剂，研究了 WM 的 C、Mn、Ni、Cr、Mo 和 W 等生化成分。本研究中的 SAW 助熔剂是采用有限混合物设计方法配制的。使用极顶点设计法设计了 21 种通量成分，并研究了通量混合物的效果。通过考虑不同的焊剂成分及其二元组合，为 DSS-2205 的埋弧焊建立了回归模型。研究得出的结论是，在单个焊剂混合物中，Al2O3 是最重要的混合物，SiO2 是第二重要的焊剂混合物。对改变 WM 成分含量影响最大的二元混合物是 SiO2MgO。通过方差分析（F 检验）对回归数学模型进行了 95% 的显著性检验。

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来源期刊

Transactions of The Indian Institute of Metals Materials Science-Metals and Alloys

CiteScore

2.60

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6.20%

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期刊介绍： Transactions of the Indian Institute of Metals publishes original research articles and reviews on ferrous and non-ferrous process metallurgy, structural and functional materials development, physical, chemical and mechanical metallurgy, welding science and technology, metal forming, particulate technologies, surface engineering, characterization of materials, thermodynamics and kinetics, materials modelling and other allied branches of Metallurgy and Materials Engineering. Transactions of the Indian Institute of Metals also serves as a forum for rapid publication of recent advances in all the branches of Metallurgy and Materials Engineering. The technical content of the journal is scrutinized by the Editorial Board composed of experts from various disciplines of Metallurgy and Materials Engineering. Editorial Advisory Board provides valuable advice on technical matters related to the publication of Transactions.