Solid state Si diffusion and joint formation involving aluminum brazing sheet

Gao, Feng; Zhao, Hui; Sekulić, Dušan P.; Qian, Yiyu; Walker, Larry R

doi:10.1016/s0921-5093(02)00031-x

Cited by 32 publications

(10 citation statements)

References 5 publications

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“…Terrill [1] and, more recently, Gao et al [5] have studied quantitatively the solid-state development of the depleted zone during isothermal holding of brazing sheets at various temperatures below T eut . Both works used ad hoc estimates of the silicon diffusion coefficient so as to obtain a good agreement between their analytical estimates and experimental values.…”

Section: Resultsmentioning

confidence: 99%

“…In addition to clad thickness measurements, comparison of calculated and experimental silicon profiles in the core could possibly give some support to the present numerical analysis. In the literature, two studies were found reporting silicon profiles after one thermal cycle below the eutectic temperature of the clad [5,6]. It was decided to use the study by Gao et al [5] who heated a coupon rapidly to 520°C, held it for 5 min at this temperature and finally cooled it quickly to room temperature.…”

Section: Resultsmentioning

confidence: 99%

“…In the literature, two studies were found reporting silicon profiles after one thermal cycle below the eutectic temperature of the clad [5,6]. It was decided to use the study by Gao et al [5] who heated a coupon rapidly to 520°C, held it for 5 min at this temperature and finally cooled it quickly to room temperature. Based on the experimental thermal records reported by Gao et al [5], a heating rate of 50 K/min was considered.…”

Section: Resultsmentioning

confidence: 99%

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Numerical Simulation of Brazing Aluminium Alloys with Al–Si Alloys

Lacaze

Jacques

Mazet

et al. 2018

Trans Indian Inst Met

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Joining parts using low-melting temperature alloys has long been used for manufacturing complex components such as heat exchangers made of aluminium alloys. Investigations of the process have shown that core/clad interaction during heating and brazing can lead to a significant decrease in the amount of liquid available for joint formation. This study presents a transient one-dimensional model for the process that takes into account the diffusion of silicon and the movement of the core/clad interface, with the model equations being implemented in the finite element software COMSOL Multiphysics; the results are compared to literature experimental data. Silicon profiles in the core are well described, while there appears a significant difference between predicted and experimental values of remaining clads which suggest a strong effect of silicon diffusion and liquid penetration at core grain boundaries.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Numerical Simulation of Brazing Aluminium Alloys with Al–Si Alloys

Lacaze

Jacques

Mazet

et al. 2018

Trans Indian Inst Met

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“…It is interesting to note that all the reaction products found at the alumina interface is obviously Ti bearing, thus the diffusion zone is considered with respect to the variation of the concentration gradient of the Ti across the interface which has been observed in EPMA concentration penetration profile (CPP) [39][40][41][42][43][44][45][46] .…”

Section: Interfacial Reaction Productsmentioning

confidence: 99%

Ceramic-Metal Joining Using Active Filler Alloy-An In-Depth Electron Microscopic Study

Kar¹,

Ray²

2012

The Transmission Electron Microscope

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“…The brazing sheets are two or multi-layered composites of at least two distinct aluminum alloys. In these kinds of sheets, the aluminum brazing filler alloys (Al-4XXX series) are clad to the aluminumbase alloys (generally Al-3XXX series) by cold or hot rolling [1,3,[5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Roll bonding behaviour of Al-3003/Al-4043 and Al-3003/Zn sheets

et al. 2011

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In the present study, the roll bonding behaviour of Al-3003/Al-4043 and Al-3003/Zn sheets were compared. The bi-layer sheets were produced by a roll bonding process at different reductions in thickness and rolling temperatures. The joint strengths of the sheets were evaluated by peel and bend testing before and after supplemental annealing treatment. The peeled surfaces were examined using a scanning electron microscope. The results indicated that the Al-3003/Al-4043 sheets were bonded with higher joint strength and lower threshold reductions in thickness with respect to the Al-3003/Zn sheets. In contrast to the Al-3003/Zn sheets, significant improvement was observed in the joint strength of the Al-3003/Al-4043 sheets after annealing treatment. Moreover, electron microscopy examinations showed that the fracture types of the Al-3003/Al-4043 and Al-3003/Zn sheets were predominantly ductile and brittle, respectively.

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Solid state Si diffusion and joint formation involving aluminum brazing sheet

Cited by 32 publications

References 5 publications

Numerical Simulation of Brazing Aluminium Alloys with Al–Si Alloys

Numerical Simulation of Brazing Aluminium Alloys with Al–Si Alloys

Ceramic-Metal Joining Using Active Filler Alloy-An In-Depth Electron Microscopic Study

Roll bonding behaviour of Al-3003/Al-4043 and Al-3003/Zn sheets

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