Threshold pressure and infiltration behavior of liquid metal into fibrous preform

Guan, Juntao; Qi, Lehua; Liu, Jian; Zhou, Jiming; Wei, Xianjun

doi:10.1016/s1003-6326(13)62849-6

Cited by 13 publications

(11 citation statements)

References 18 publications

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“…According to our experimental experience in the test, infiltration time is completed within a very short time after extrusion pressure is applied, so 0.2 s is taken. The permeability coefficient K can be obtained from the porous pipe model by the Blake-Kozeny equation [21], and Eq. 6 is as follows.…”

Section: Infiltration Pressure Analysis Dynamicallymentioning

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: Infiltration Pressure Analysis Dynamicallymentioning

confidence: 99%

“…5, Eq. 7 of additional load required to achieve the infiltration of composite materials is obtained as follows [21,22].…”

Section: Infiltration Pressure Analysis Dynamicallymentioning

confidence: 99%

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

Ma¹

2020

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“…(2) Matrix flows steadily in the capillary, and the influence of the resistance at the front end is ignored. 3The 2D carbon fiber preform has an internal vacuum and the opposite pressure of gas on the matrix is ignored [9].…”

Section: (2) Dynamic Analysis and Calculation Of Infiltration Pressurementioning

confidence: 99%

“…influence of the resistance at the front end is ignored. (3)The 2D carbon fiber preform has an internal vacuum and the opposite pressure of gas on the matrix is ignored [9]. The matrix is mainly affected by the capillary pressure, viscous resistance and air resistance during the infiltration process.…”

Section: (2) Dynamic Analysis and Calculation Of Infiltration Pressurementioning

confidence: 99%

Influence of Infiltration Pressure on the Microstructure and Properties of 2D-CFRP Prepared by the Vacuum Infiltration Hot Pressing Molding Process

Zhao

Zhang

et al. 2019

Polymers

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The critical infiltration pressures of the matrix in a two-dimensional (2D) carbon fiber preform were calculated theoretically, and the calculated values of the static and dynamic models were 0.115 and 0.478 MPa, respectively. Compared with the dynamic model, there is no viscous resistance or infiltration front gas pressure in the static model, so the static value is obviously lower than the dynamic value. To verify the rationality of theoretical calculation, 2D carbon fiber reinforced plastics (2D-CFRP) with infiltration pressures of 0.5, 0.6, 0.7, 0.8, and 0.9 MPa were prepared by the vacuum infiltration hot pressing molding process. The microstructure of the composite was observed and the bending strength was tested by three-point bending test. The results show that the infiltration pressure has an important influence on the infiltration effect and the bending fracture morphology. When the infiltration pressure is 0.7 MPa, the composite has an excellent infiltration effect. The fibers distribute reasonable in the fracture. Stress can be effectively transferred when the composite material is loaded. And the bending strength of the composite material reaches 627 MPa at this time.

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“…Next, molten magnesium alloy was poured into the forming mould under a gas pressure of 0.15-0.2 MPa [23]. Infiltration pressure was applied to the surface of the molten magnesium alloy, which was produced by a moving punch connected to a hydraulic press machine (as shown in Fig.…”

Section: Fig 1 Schematic Diagram Of Forming Mouldmentioning

confidence: 99%

Effect of holding pressure on densification and mechanical properties of C_f/Mg composites

Wei

et al. 2017

Materials Science and Technology

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Carbon fibre reinforced magnesium alloy matrix composites were fabricated by using liquidsolid extrusion directly following vacuum infiltration technique. The experimental results showed that the microstructures of Cf/Mg composites depended on the holding pressure. The porosity was reduced gradually, and the densification was improved obviously, respectively, with the increase of the holding pressure. The densification, hardness and Ultimate tensile strength of Cf/Mg composites were significantly improved as the holding pressure increased in the range of 0.1-15 MPa. The densification was not obvious, but the UTS of the Cf/Mg composites decreased gradually as the holding pressure increased in the range of 25-45 MPa.The Cf/Mg composites presented a good performance when the holding pressure was about 15 MPa.

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Threshold pressure and infiltration behavior of liquid metal into fibrous preform

Cited by 13 publications

References 18 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

Influence of Infiltration Pressure on the Microstructure and Properties of 2D-CFRP Prepared by the Vacuum Infiltration Hot Pressing Molding Process

Effect of holding pressure on densification and mechanical properties of C_f/Mg composites

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Threshold pressure and infiltration behavior of liquid metal into fibrous preform

Cited by 13 publications

References 18 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

Influence of Infiltration Pressure on the Microstructure and Properties of 2D-CFRP Prepared by the Vacuum Infiltration Hot Pressing Molding Process

Effect of holding pressure on densification and mechanical properties of Cf/Mg composites

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Effect of holding pressure on densification and mechanical properties of C_f/Mg composites