Infiltration characteristics of liquid AZ91D alloy into short carbon fiber preform

Qi, Lehua; Su, Li; Zhou, Jiming; Guan, Juntao; Hou, Xianghui; Li, H.J.

doi:10.1016/j.jallcom.2012.02.133

Cited by 30 publications

(8 citation statements)

References 29 publications

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“…According to the Fig. 6 a, after the infiltration pressure of 3.5 MPa is given, the temperature values collected by the four thermocouples shows a decreasing trend, indicating that the aluminum alloy liquid has not infiltrated into the fiber gaps of the carbon fiber preform [2].…”

Section: Experimental Process Parametersmentioning

confidence: 98%

“…If infiltration effect is poor, there will be large pores and no infiltration areas in the composites, and this will result in properties of composites will be poor. Therefore, it is very important to study infiltration law of alloy in carbon fiber preform to obtain CF/Al composites with sufficient and uniform infiltration effect [2,3].…”

Section: Introduction mentioning

confidence: 99%

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Study on Critical Infiltration Behavior and Law of Liquid Aluminum Alloy in Carbon Fiber Preform

Ma¹

2020

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Infiltration effect is an important factor for the preparation of ideal CF/Al composites by liquid infiltration method, so it is necessary to study the infiltration law of aluminum alloy in carbon fiber preform to obtain composite with sufficient and uniform infiltration effect. Through theoretical analysis and calculation of statics and dynamics, critical infiltration pressures of the liquid aluminum alloy in the 2D carbon fiber preform were 0.53 MPa and 3.24 MPa, respectively, when carbon fiber volume fraction was 45 %. Mechanical pressure infiltration method was used to study critical infiltration pressures and behavior of the liquid aluminum alloy in the 2D carbon fiber preform, and the experimental results indicated that the infiltration front of aluminum alloy had never broken through the surface of carbon fiber preform, when the infiltration pressure was 3.5 MPa. Carbon fibers and aluminum alloy were separated and the infiltration effect was not ideal under the pressure of 3.5 MPa. When the infiltration pressure was 7 MPa, the infiltration could be implemented. The actual infiltration pressure of the experiments is greater than the theoretical calculation value, because viscous resistance, solidification resistance and other factors are ignored in the calculation process. However, infiltration depth increases with increase in infiltration time at infiltration pressure of 7 MPa, and this verifies the correctness of the previous theoretical research results.

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Section: Experimental Process Parametersmentioning

confidence: 98%

Section: Introduction mentioning

confidence: 99%

Study on Critical Infiltration Behavior and Law of Liquid Aluminum Alloy in Carbon Fiber Preform

Ma¹

2020

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“…This method is also applicable to the determination of key infiltration parameters of other metal matrix composite systems. Qi et al [ 9 ] studied the infiltration characteristics of liquid alloys in carbon fiber preform, established the infiltration kinetics model and threshold pressure model, and determined the uncertainty of the fractal characteristics of porous media. The research on the infiltration mechanism of resin in the fiber preform is relatively late.…”

Section: Introductionmentioning

confidence: 99%

Calculation and Experimental Study on Extrusion Pressure of Resin in 3D Carbon Fiber Preform

Wang

et al. 2020

Physica Status Solidi (a)

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Three‐dimensional carbon fiber reinforced resin matrix composite can effectively overcome the defects of traditional composite in the interlayer strength and stiffness, and has been widely used. Herein, the threshold infiltration pressure of resin in three‐dimensional carbon fiber preform is respectively calculated as 0.170 and 0.973 MPa from the perspective of statics and dynamics. The static calculation ignores the additional pressure caused by the viscous resistance of the resin during the infiltration process, which deviated greatly from the actual value. Therefore, the dynamics calculation value is used as a reference to extrusion pressure in the experiment. The composites with extrusion pressure of 1, 2, 3, 4, and 5 MPa are prepared by vacuum infiltration hot pressing process. Through the study of the infiltration microstructure and bending fracture morphology of the composite, it is found that when the extrusion pressure is 3 MPa, the preparation effect is the best. At this time, the bending strength of the composite is 540 MPa, which is 92.86% and 71.43% higher than that at 1 and 5 MPa, respectively. It is indicated that the extrusion pressure is a key parameter in the composite preparation process and needs to be selected reasonably.

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“…The extrusion directly following vacuum infiltration technique (EFVI) is one of the most important processes for preparing magnesium matrix composites. In EFVI, melt infiltration is a key process whereby molten magnesium alloy can infiltrate completely into the porous perform [3,4]. When the liquid magnesium alloy flows through the preform, its thermodynamic properties also change with the alloy liquid flow and temperature conditions.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of non-isothermal infiltration process for fabricating magnesium matrix composite

Su¹,

Bai²,

Li³

et al. 2017

Proceedings of the 2016 International Forum on Mechanical, Control and Automation (IFMCA 2016)

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Abstract. For the control and adjustment of the infiltration quality of the magnesium alloy liquid in porous perform, the coupling effect of temperature and pressure should be considered simultaneously. The thermodynamic characteristics of the local region can be adjusted by changing the boundary temperature of the porous performs. In this study, the mathematical model of the flow and heat transfer process of magnesium alloy liquid in carbon fiber perform was established. The numerical solution of the partial differential equation system is developed. The effects of the constant heating temperature and the linear heating temperature on the infiltration characteristics of the porous perform are investigated. The results showed that the linear non-isothermal heating condition could change the flow characteristics of the magnesium alloy liquid close to the inner wall of the porous perform. The fluid velocity along the flow direction tended to be average in the region close to the heating wall. Imposing temperature gradient on porous media was an effective way to regulate and control the infiltration quality. The numerical predictions were compared with the experiment data, and good agreement had been found between them. In addition, the numerical models could be developed to predict the appearance of defects in the end product and to study the evolution of the deformation of fibrous preform during metal infiltration.

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Infiltration characteristics of liquid AZ91D alloy into short carbon fiber preform

Cited by 30 publications

References 29 publications

Study on Critical Infiltration Behavior and Law of Liquid Aluminum Alloy in Carbon Fiber Preform

Study on Critical Infiltration Behavior and Law of Liquid Aluminum Alloy in Carbon Fiber Preform

Calculation and Experimental Study on Extrusion Pressure of Resin in 3D Carbon Fiber Preform

Numerical analysis of non-isothermal infiltration process for fabricating magnesium matrix composite

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