Experimental Investigation of Microstructure and Phase Transitions in Ag-Cu-Zn Brazing Alloys

Dimitrijević, Stevan P.; Manasijević, Dragan; Kamberović, Željko; Dimitrijević, Suzana; Mitrić, Miodrag; Gorgievski, Milan; Mladenović, Srba

doi:10.1007/s11665-018-3258-1

Cited by 11 publications

(5 citation statements)

References 34 publications

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“…The presence of such a Zn-rich phase would fit well with the EDX elemental maps. This explanation is in agreement with literature, where for an equimolar Cu-Ag-Zn alloy at the thermodynamic equilibrium a three phase system was observed [61,62] (two fcc phases and a bcc phase). The two fcc phases should correspond to a Cu-rich/Ag-poor and Ag-rich/Cu-poor phase respectively.…”

Section: Fabrication Of Cu-ag-zn Ternary Alloysupporting

confidence: 93%

See 1 more Smart Citation

Micron-Scale Additive Manufacturing of Binary and Ternary Alloys by Electrohydrodynamic Redox 3d Printing

Porenta¹,

Nydegger²,

Menétrey³

et al. 2023

Preprint

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Section: Fabrication Of Cu-ag-zn Ternary Alloysupporting

confidence: 93%

“…4a). The phase diagram of this ternary system has been studied in literature [61,62]. It has been shown to form complex multi-phase systems, especially for Zn contents >30 at%.…”

Section: Fabrication Of Cu-ag-zn Ternary Alloymentioning

confidence: 99%

Micron-Scale Additive Manufacturing of Binary and Ternary Alloys by Electrohydrodynamic Redox 3d Printing

Porenta¹,

Nydegger²,

Menétrey³

et al. 2023

Preprint

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“…Consistent with Cu/Fe and Fe/Zn phase pictures, when the temperature reaches 850 °C, Zn and Cu effectively dissolve in Fe when Zn solid solubility is higher than Cu [23]. However, brazing filler with Ag content has serious dissolved problems in α-Fe [24]. EDS results in Figure 8 (B) show the transition brazing line between brazing filler solidified metals and stainless-steel side; the results reveal the high concentration of Zn and Fe with low Ag percentage, which gives strong evidence about the ferrite layer formation.…”

Section: Brazing Sem and Eds Line Map Analysismentioning

confidence: 65%

Microstructure, Mechanical Properties, and Heat Distribution ANSYS model of CP Copper and 316 Stainless Steel Torch Brazing

Abtan,

Mohammed,

Alshalal

2024

Adv. Sci. Technol. Res. J.

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Using torch brazing techniques, 316 stainless steel was brazed to CP copper using flux-coated low silver content filler with 20% Ag. The brazing torch utilized a fuel mixture of propane gas with oxygen to produce the required heating amount due to the possibility of economic interest in employing low-silver-content filler. The brazing filler's braze ability with SUS304 and copper was scrutinized and deeply analyzed. A ferrite barrier layer was made on the stainless-steel side, and an excellent brazed joint was produced. Metallurgical studies using an optical microscope and a scanning electron microscope (SEM) confirmed the production of a ferrite layer. This layer's advantages were carefully examined with metallurgical testing, electron diffraction scanning (EDS), EDS mapping, and EDS line analyses, including preventing copper intergranular penetration into the stainless-steel grain boundary. The mechanical properties of the brazed joint and its usability were assessed through Vickers microhardness and tensile tests on the brazing seam and both base metals. The results of the brazing process showed that using flux-coated low-silver brazing techniques produced strong joints with satisfactory mechanical properties. These techniques are a cost-effective alternative to high-priced brazing fillers with high silver content. Geometrical models simulated the heat distribution using ANSYS and SOLIDWORKS software to analyze penetration depth, joint quality, surface cracks, and the relation between molten filler density variation and the wetting process.

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“…Eventually, legislation introduced in the European Union (Commission regulation (EU) No 494/2011) banned the sale of brazing filler metals with cadmium concentrations ≥ 0.01wt-% (barring specialist military and aerospace applications) [10]. The exact structure of phases, the microstructures and the thermal properties in the Ag-Cu-Zn system are still under investigation, with literature contributions being published as recently as 2018 [67]. It is anticipated that investigations into this family of filler metals in service will continue; however, beyond the development of thrifted alloys with reduced silver, and hence cost (such as Bluebraze, Umicore; 20-35% Ag), composition innovations are improbable.…”

Section: Silver-based Alloysmentioning

confidence: 99%

Brazing filler metals

Way

Willingham

Goodall

2019

International Materials Reviews

110

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Brazing is a 5000-year-old joining process which still meets advanced joining challenges today. In brazing, components are joined by heating above the melting point of a filler metal placed between them; on solidification a joint is formed. It provides unique advantages over other joining methods, including the ability to join dissimilar material combinations (including metal-ceramic joints), with limited microstructural evolution; producing joints of relatively high strength which are often electrically and thermally conductive. Current interest in brazing is widespread with filler metal development key to enabling a range of future technologies including; fusion energy, Solid Oxide Fuel Cells and nanoelectronics, whilst also assisting the advancement of established fields, such as automotive lightweighting, by tackling the challenges associated with joining aluminium to steels. This review discusses the theory and practice of brazing, with particular reference to filler metals, and covers progress in, and opportunities for, advanced filler metal development.

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Experimental Investigation of Microstructure and Phase Transitions in Ag-Cu-Zn Brazing Alloys

Cited by 11 publications

References 34 publications

Micron-Scale Additive Manufacturing of Binary and Ternary Alloys by Electrohydrodynamic Redox 3d Printing

Micron-Scale Additive Manufacturing of Binary and Ternary Alloys by Electrohydrodynamic Redox 3d Printing

Microstructure, Mechanical Properties, and Heat Distribution ANSYS model of CP Copper and 316 Stainless Steel Torch Brazing

Brazing filler metals

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