Process Parameters for Short Carbon Fiber Reinforced Magnesium Composites Fabricated by Vacuum Pressure Infiltration

Yang Cheng; Lu Zhuqing; Chen Baolin; Zhang Qian; Zhou Jiming; Qi Lehua

doi:10.15980/j.tzzz.2021.04.025

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Process Parameters for Short Carbon Fiber Reinforced Magnesium Composites Fabricated by Vacuum Pressure Infiltration
Vol. 41, Issue 4, Pages: 508-512(2021)
Published： 2021 ，
DOI： 10.15980/j.tzzz.2021.04.025

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[1]杨程,卢竹青,陈宝林,张乾,周计明,齐乐华.真空压力浸渗短切碳纤维增强镁基复合材料工艺参数研究[J].特种铸造及有色合金,2021,41(04):508-512.

Yang Cheng, Lu Zhuqing, Chen Baolin, et al. Process Parameters for Short Carbon Fiber Reinforced Magnesium Composites Fabricated by Vacuum Pressure Infiltration. [J]. Special Casting & Nonferrous Alloys 41(4):508-512(2021)
[1]杨程,卢竹青,陈宝林,张乾,周计明,齐乐华.真空压力浸渗短切碳纤维增强镁基复合材料工艺参数研究[J].特种铸造及有色合金,2021,41(04):508-512. DOI： 10.15980/j.tzzz.2021.04.025.

Yang Cheng, Lu Zhuqing, Chen Baolin, et al. Process Parameters for Short Carbon Fiber Reinforced Magnesium Composites Fabricated by Vacuum Pressure Infiltration. [J]. Special Casting & Nonferrous Alloys 41(4):508-512(2021) DOI： 10.15980/j.tzzz.2021.04.025.

摘要

为保证真空吸渗挤压工艺制备的C

/Mg（短切碳纤维增强镁基）复合材料质量

采用湿法成形工艺制备了体积分数为10%的T300碳纤维预制体

基于已有真空压力浸渗装置进行了液态AZ91D镁合金的浸渗试验

采用正交试验研究了工艺参数（浇注温度、预制体预热温度、浸渗压力、保压时间）对C

/Mg复合材料致密度的影响。结果表明

预热温度对复合材料致密度影响最为显著

浸渗压力次之

且致密度随预制体预热温度和浸渗压力的增加而增加。最终得到最佳的液态浸渗工艺参数:预制体预热温度为600℃

浸渗压力为0.6MPa

浇注温度为800℃

保压时间为20s。

Abstract

In order to ensure the quality of C

/Mg（short carbon fiber reinforced magnesium）composites manufactured by liquid-solid extrusion combining with vacuum pressure infiltration（LSEVI）process

T300 carbon fiber preform with a volume fraction of 10% was prepared by wet forming method.The infiltration test of liquid AZ91 D magnesium alloy was carried out based on the existing vacuum pressure infiltration device.Orthogonal design was used to investigate the influence of infiltration process parameters（pouring temperature

preform preheating temperature

infiltration pressure

pressure holding time）on the relative density of C

/Mg composites.The results reveal that preheating temperature has the most significant effect on the density of C

/Mg

followed by the infiltration pressure

and the relative density is increased with the increase of the preform preheating temperature and infiltration pressure.The optimal liquid infiltration process parameters are presented as follows:600℃

0.6 MPa

800℃

20 s

respectively.