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首页> 外文期刊>Journal of Materials Engineering and Performance >The Effect of Weld Metal Composition on Microstructural and Mechanical Properties of Dissimilar Welds Between Monel 400 and Inconel 600
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The Effect of Weld Metal Composition on Microstructural and Mechanical Properties of Dissimilar Welds Between Monel 400 and Inconel 600

机译：焊接金属组合物对纪念碑400与Inconel 600之间不同焊缝微结构和力学性能的影响

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摘要

The current work was carried out to characterize welding of Inconel 600 superalloy and Monel 400. In the present study, gas tungsten arc welding (GTAW) with four types of filler metals (ENiCu, ENiCu-7, ENiCr-3 and ENiCrFe-3) was utilized. The filler metals were categorized into two groups based on the presence of Cr and Nb in their chemical composition. This paper describes the selection and application of welding consumables in manufacturing dissimilar metal combinations. It was found that (Nb/Cr) ratio and Fe content can affect on the size and amount of carbides. During solidification of ENiCr-3 and ENiCrFe-3 filler metals, Nb leaves dendritic cores and is rejected to inter-dendritic regions because of its high tendency for segregation. However, No brittle Laves phase was detected in the welds. The interface between weld metal and base metal and gradual changes in alloying elements were also investigated by scanning electron microscopy. EDX analysis was also applied for different samples. Microhardness measurements and tensile test were performed on the joints. The average hardness value in the weld metal obtained from ENiCrFe-3 is higher than the other welds. ENiCu-7 weld exhibited the highest tensile strength of 540 MPa and percent elongation of 53% in contrast to ENiCrFe-3 weld with the lowest tensile strength (518 MPa) and percent elongation (39%).
机译：目前的工作是为了表征Inconel 600超合金和Monel 400的焊接。在本研究中，气体钨弧焊（GTAW）具有四种类型的填充金属（ENICU，ENICU-7，ENICR-3和ENICRFE-3）被利用。基于其化学成分中的Cr和Nb的存在，将填料金属分为两组。本文介绍了在制造不同金属组合中的焊接消耗品的选择和应用。发现（NB / Cr）比和Fe含量会影响碳化物的大小和量。在ENICR-3和ENICRFE-3填充金属的凝固过程中，Nb叶树枝状核心，并且由于其偏析的高趋势而被拒绝在树突间区域。但是，在焊缝中没有检测到脆性疏浚阶段。还通过扫描电子显微镜研究焊接金属和基础金属之间的界面和合金元素的逐渐变化。 EDX分析也适用于不同的样品。在关节上进行显微硬度测量和拉伸试验。从EnicrFe-3获得的焊接金属中的平均硬度值高于其他焊缝。 Enicu-7焊缝的抗拉强度为540MPa，伸长率为53％，与ENICRFE-3焊缝具有最低的拉伸强度（518MPa）和伸长率百分比（39％）。

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