Vacuum brazing of aluminium metal matrix composite (55vol.% SiCp/A356) using aluminium-based filler alloy

Niu, Jitai; X, Luo; Tian, Hao; Brnić, Josip

doi:10.1016/j.mseb.2011.12.042

Cited by 33 publications

(20 citation statements)

References 15 publications

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“…The Al 2 Cu phase was also detected in the research by Niu et al [17]. Meanwhile, some gray phase, which was confirmed to be TiAl 3 , formed between the Ti particles and the aluminum matrix.…”

Section: Interfacial Microstructure Of the Cs Jointmentioning

confidence: 62%

Effects of Joining Conditions on Microstructure and Mechanical Properties of Cf/Al Composites and TiAl Alloy Combustion Synthesis Joints

Gui

Liu

et al. 2015

Acta Metall. Sin. (Engl. Lett.)

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C f /Al composites and TiAl alloy were joined by combustion synthesis in different joining conditions. Effects of additive Cu, joining temperature and holding time on joint microstructure and shear strength were characterized by employing DTA, SEM, EDS, XRD and shear test. Results show that the additive Cu in the Ti-Al-C interlayer could significantly decrease the reaction temperature owing to the emergence of Al-Cu eutectic liquid. Reaction degree of the interlayer was influenced by joining temperature and holding time. Due to the barrier action of formed TiAl 3 layer, reaction rate of Ti and Al was determined by the atoms diffusion. The reaction between Ti and Al was more sensitive to the joining temperature rather the holding time. The joints shear strength was influenced by joining condition directly. The maximum shear strength of CS joints was 25.89 MPa at 600°C for 30 min under 5 MPa. Interface evolution mechanism of the CS joint was analyzed based on the experimental results and phase diagram.

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Section: Interfacial Microstructure Of the Cs Jointmentioning

confidence: 62%

Effects of Joining Conditions on Microstructure and Mechanical Properties of Cf/Al Composites and TiAl Alloy Combustion Synthesis Joints

Gui

Liu

et al. 2015

Acta Metall. Sin. (Engl. Lett.)

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“…Based on these issues, it is necessary to develop ternary or multi-element alloys with good mechanical properties and relatively low melting temperature. According to the works reported [28][29][30][31] , the quaternary Al-Si-Cu-Ni alloy has a relatively low melting temperature. What is more, the Ni and Cu elements can form solid solutions with each other and improve the ductility and toughness of the filler metal.…”

Section: Current Investigationsmentioning

confidence: 99%

“…As expected, the brazing temperatures using the Al-based filler metals are located in the range of 550~600 °C. Compared with the direct brazing SiCp/A356 composite using the 69Al-24Cu-1.5Mg-5Si-0.5Ni as filler metal at 550 °C (a) and 560 °C (b) [28] coating electroless plated on a HFC SiCp/Al composite [45] processes and the corresponding maximum joint strength, most of the optimal holding time is prolonged and all the maximum joint shear strength values are enhanced to o ver 100 MPa except for using the Sn-Ag-Ni filler metal. This sharp decrease of joint strength obtained by the Sn-based filler metal can be attributed to the undesirable interfacial layer involving Ni-Sn-P, Ni 3 P and Ni-P phases derived from the chemical reactions between the Sn-Ag-Ni filler metal and the Ni(-P) coating [50] .…”

Section: Brazing After Metallizationmentioning

confidence: 99%

Review on Brazing of High Volume Faction SiC p /Al Composites for Electronic Packaging Applications

Zhang

Zhao

Liu

et al. 2017

Rare Metal Materials and Engineering

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High volume faction (HFC, ≥50%) SiCp/Al composites are becoming increasingly popular as the electronic packaging materials, and the brazing of them is therefore of great practical importance. Recently, some new filler metal alloys and processes have been developed for effectively brazing the HFC SiCp/Al composites. Starting from a survey of physical and mechanical properties and fabrication process of the HFC SiCp/Al composites, the filler metal, brazing process as well as the corresponding joint microstructures and strength are reviewed for understanding their relationships in order to improve the joining technique and joint reliability. The additions of Cu, Mg and Ni into Al-Si based alloy can contribute to improve the performances of filler metal and/or joint, such as the operating temperature of filler metal, interfacial bonding and brazing seam strength. Two assisted procedures involving surface metallization and ultrasonic vibration can optimize the brazability by avoiding or removing the inevitable oxide films (Al2O3 and SiO2) on the surface of HFC SiCp/Al composites. The need of further investigations, covering optimization design of filler metal, surface metallization process as well as wettability and interfacial behavior of filler-coating-SiCp/Al substrate system are strongly underlined.

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“…The published brazing filler metals can be classified into three groups with different melting regions: (I) Zn-Al(-Cu), [9][10][11][12] (II) Al-12Si (4047), [13,14] and Al-11.6Si-1.5Mg [4N04 with a melting range of 840 K to 850 K (567°C to 577°C)] systems, [7,8,[14][15][16][17] and (III) Al-28Cu-5Si-2Mg with a melting range of 798 K to 808 K (525°C to 535°C) [18,19] and Al-24Cu-5-Si-0.5Ni. [20] For Zn-based filler metals, flux (hygroscopic chlorides), [9] ultrasonic vibration, [10,11] or stirring [12] must be introduced to remove oxide film on the Al matrix surface at a lower joining temperature in air. For Al-Si brazing filler metal, an interfacial gap (1 lm) at R/M interface was observed, [13] and it was easy to discharge from the joint interface under pressure, leading to the lack of dissolution of Al matrix.…”

Section: Introductionmentioning

confidence: 99%

Active-Transient Liquid Phase (A-TLP) Bonding of Pure Aluminum Matrix Composite Reinforced with Short Alumina Fiber Using Al-12Si-xTi Foils as Active Interlayer

Zhang

Suzumura

2016

Metall Mater Trans B

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To optimize both the interlayer composition design route and pressure for joining aluminum matrix composite reinforced with short alumina fiber (as-cast 30 vol pct Al 2 O 3sf /Al), traditional transient liquid phase (TLP) bonding using Al-12Si and Cu interlayer and active-TLP (A-TLP) bonding using an active Ti-containing interlayer (Al-12Si-xTi, x = 0.1, 0.5, and 1 wt pct) under the same condition [883 K (610°C) 9 30 minutes 9 1 or 0.015 MPa in flowing argon] were compared in terms of interfacial wettability, bond seam microstructure, shear strength, and fracture path. It was found that not only the Ti content but also the pressure are critical factors affecting interfacial wettability and bond seam microstructure. The improvement in wettability by adding Ti as an active element were confirmed by reduction of expulsion of liquid interlayer, elimination of interfacial gap, higher shear strength and favorable fracture path (partially through bond seam and the composite). Because of the incubation period for wetting, reducing the pressure after melting of the interlayer could further increase joint shear strength by thickening the remaining bond seam of solid-solution matrix and decreasing fraction of the in situ newly formed Al-Si-Ti IMC phase (short bar shape) within the bond seam. The maximum shear strength of 88.6 MPa (99 pct of the as-cast composite) was obtained by adding trace Ti content (0.5 Ti wt pct) addition and using low pressure (0.015 MPa). The results showed that suitable combination of Ti content and pressure pattern is required for improving both wettability and bond seam microstructure.

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Vacuum brazing of aluminium metal matrix composite (55vol.% SiCp/A356) using aluminium-based filler alloy

Cited by 33 publications

References 15 publications

Effects of Joining Conditions on Microstructure and Mechanical Properties of Cf/Al Composites and TiAl Alloy Combustion Synthesis Joints

Effects of Joining Conditions on Microstructure and Mechanical Properties of Cf/Al Composites and TiAl Alloy Combustion Synthesis Joints

Review on Brazing of High Volume Faction SiC p /Al Composites for Electronic Packaging Applications

Active-Transient Liquid Phase (A-TLP) Bonding of Pure Aluminum Matrix Composite Reinforced with Short Alumina Fiber Using Al-12Si-xTi Foils as Active Interlayer

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