Preparation and Stiffness Property of Cf/Mg Composite Special-shaped Thin Parts Fabricated by Liquid-solid Extrusion Following Vacuum Pressure Infiltration

doi:10.3901/JME.2025.04.107

Abstract

Abstract: The carbon fiber reinforced magnesium matrix (C_f/Mg) composites exhibit light weight, high specific strength and modulus as well as excellent dimensional stability, which means more potential for engineering applications such as in aeronautic/astronautic equipment, light armaments, and railway traffic equipment. Due to the poor wettability and the high-temperature reaction between the carbon fiber and magnesium alloy, especially the forming thin parts with the thin wall and complex shapes, the incomplete filling or the nonuniform infiltration of liquid magnesium at variable cross-section is prone to occur. These challenges increase the difficulty of the preparation, which limits the practical applications of C_f/Mg composites. The liquid-solid extrusion following vacuum pressure infiltration mainly includes the following steps. Firstly, the molten metal infiltrates partially into the fiber preform under a vacuum environment. Then, the preform is fully infiltrated by a hydraulic pressure. When the metal solidifies into a liquid-solid state, a high pressure is applied to further restrict the shrinkage and increase the densification. The process can improve the overall performance of composite parts. Taking the preparation of an electronic mounting plate of the missile as a typical example, the process steps, process parameters, tensile properties and integral stiffness of the composite plate are studied in detail. The result shows that the fabricated C_f/Mg thin parts can meet the requirements of practical applications. When the extrusion temperature is 600 ℃ and the circulating cooling system is installed, the preform is completely and uniformly infiltrated by the molten magnesium alloy. The detrimental interfacial reaction between the fiber and magnesium alloy is decreased by the designed circulating cooling system, which further improves the mechanical properties of C_f/Mg thin parts. The ultimate tensile strength and elastic modulus reach up to 328 MPa and 68 GPa, respectively, which are 24% and 6% higher than those of uncirculated cooling parts, and are 139% and 79% higher than those of magnesium alloy parts. The overall load-bearing capacity of the parts was tested. The deformation of the circulated cooling parts under the 700 N pressure is only 0.313 mm, which is reduced by 2/3 of that of magnesium alloy parts. The objective of this study is to lay a foundation for the preparation and application of C_f/Mg composite structural parts.

Key words: magnesium matrix composites, liquid-solid extrusion following vacuum pressure infiltration, carbon fibers, special-shaped thin parts, integral stiffness

CLC Number:

TB331

CHEN Baolin, LU Zhuqing, ZHOU Jiming, JU Luyan, QI Lehua. Preparation and Stiffness Property of C_f/Mg Composite Special-shaped Thin Parts Fabricated by Liquid-solid Extrusion Following Vacuum Pressure Infiltration[J]. Journal of Mechanical Engineering, 2025, 61(4): 107-115.

References

[1] BAO Y，WANG B，HE Z X，et al. Recent progress in flexible supporting technology for aerospace thin-walled parts:a review[J]. Chinese Journal of Aeronautics，2022，35(3):10-26.
[2] PRASAD S V S，Prasad S B，Verma K，et al. The role and significance of Magnesium in modern day research-A review[J]. Journal of Magnesium and Alloys，2022，10(1):1-61.
[3] LU Y，JIANG J，ZHANG J，et al. A dynamic stiffness improvement method for thin plate structures with laminated/embedded shape memory alloy actuators[J]. Thin-Walled Structures，2022，175:109286.
[4] ZHANG S，CHEN G，PEI R，et al. Effect of Gd content on interfacial microstructures and mechanical properties of C_f/Mg composite[J]. Materials & Design，2015，65:567-574.
[5] 张荻，谭占秋，熊定邦，等. 热管理用金属基复合材料的应用现状及发展趋势[J]. 中国材料进展，2019，12:994-1001. ZHANG Di，TAN Zhanqiu，XIONG Dingbang，et al. Application and prospect of metal matrix composites for thermal management:An overview[J]. Materials China，2019，12:994-1001.
[6] K RNER C，SCH FF W，OTTM LLER M，et al. Carbon long fiber reinforced magnesium alloys[J]. Adv. Eng. Mater.，2000，2(6):327-337.
[7] Hynes N R J，Vignesh N J，Jappes J T W，et al. Effect of stacking sequence of fibre metal laminates with carbon fibre reinforced composites on mechanical attributes:Numerical simulations and experimental validation[J]. Composites Science and Technology，2022，221:109303.
[8] 武高辉，乔菁，姜龙涛. Al及其复合材料尺寸稳定性原理与稳定化设计研究进展[J]. 金属学报，2019，55(1):33-44. WU Gaohui，QIAO Jing，JIANG Longtao. Research progress on principle of dimensional stability and stabilization design of Al and its composites[J]. Acta Metall Sin，2019，55(1):33-44.
[9] 晏梦雪，田小永，彭刚，等. 轻质复合材料飞行器仪器支架选择性激光烧结成形与性能研究[J]. 机械工程学报，2019，55(13):144-150. YAN Mengxue，TIAN Xiaoyong，PENG Gang，et al. Performance study of lightweight composites equipment section support fabricated by selective laser sintering[J]. Journal of Mechanical Engineering，2019，55(13):144-150.
[10] 杨程，齐乐华，周计明，等. 碳纤维增强镁基复合材料制备技术与新进展[J]. 复合材料学报，2021，38(7):1985-2000. YANG Cheng，QI Lehua，ZHOU Jiming，et al. Preparation process and new progress in carbon fiber reinforced magnesium matrix composites[J]. Acta Materiae Compositae Sinica，2021，38(7):1985-2000.
[11] Meher A，Mahapatra M M，Samal P，et al. A review on manufacturability of magnesium matrix composites:Processing，tribology，joining，and machining[J]. CIRP Journal of Manufacturing Science and Technology，2022，39:134-158.
[12] Shirvanimoghaddam K，Hamim S U，Akbari M K，et al. Carbon fiber reinforced metal matrix composites:Fabrication processes and properties[J]. Composites Part A:Applied Science and Manufacturing，2017，92:70-96.
[13] Rana V，Kumar H，Kumar A. Fabrication of hybrid metal matrix composites (HMMCs)–A review of comprehensive research studies[J]. Materials Today:Proceedings，2022，56(5):3102-3107.
[14] ZHANG S，CHEN G，PEI R，et al. Effect of Y content on interfacial microstructures and mechanical properties of C_f/Mg composite[J]. Materials Science and Engineering:A，2015，647:105-112.
[15] 李志文，蔡长春，余欢，等. 复合编织结构C_f/Al复合材料T型件弯曲性能[J]. 航空学报，2023，44(16):427510. LI Zhiwen，CAI Changchun，YU Huan，et al. Study on bending properties of T-type composite braided structure of C_f/Al composite material[J]. Acta Aeronautica et Astronautica Sinica，2023，44(16):427510.
[16] Olszówka-Myalska A，Myalski J. Magnesium alloy AZ31-short carbon fiber composite obtained by pressure die casting[C]//Solid State Phenomena. Trans Tech Publications Ltd，2015，229:115-122.
[17] Lee J A，Kashalikar U，Majkowski P. Casting of weldable graphite/magnesium metal matrix composites with built-in metallic inserts[C]//NASA，Washington，Technology 2003:The Fourth National Technology Transfer Conference and Exposition，Volume 1. 1994.
[18] 关俊涛，齐乐华，刘健，等. 挤压温度对真空吸渗挤压C_sf/Mg复合材料制备工艺的影响[J]. 机械工程学报，2012，48(14):25-31. GUN Juntao，QI Lehua，LIU Jian，et al. Effect of Extrusion temperature on fabrication of C_sf/Mg composite by extrusion directly following vacuum pressure infiltration process[J]. Journal of Mechanical Engineering，2012，48(14):25-31.
[19] QI L H，WANG Z J，ZHOU J M，et al. Constitutive behavior of C_sf/AZ91D composites compressed at elevated temperature and containing a small fraction of liquid[J]. Composites Science and Technology，2011，71(7):955-961.
[20] ZHANG T，QI L，LI S，et al. Evaluation of the effect of PyC coating thickness on the mechanical properties of T700 carbon fiber tows[J]. Applied Surface Science，2019，463:310-321.
[21] 苏常青，齐乐华，张丽丹，等. 连续碳纤维/Mg复合材料异形薄板件预制体制备与成型[J]. 复合材料学报，2017，34(6):1285-1292. SU Changqing，QI Lehua，ZHANG Lidan，et al. Fabrication and forming of preforms for carbon fiber/mg composites sheet-shaped component[J]. Acta Materiae Composite Sinica，2017，34(6):1285-1292.
[22] ZHANG T，QI L H，LI S L，et al. Effect of PyC coating on mechanical properties of C_f/AZ91D composites[J]. Surface Engineering，2018，34(11):852-860.
[23] 崔晓鹏. AZ91D镁合金半固态触变注射组织与工艺研究[D]. 长春:吉林大学，2006. CUI Xiaopeng. The research on the microstructure and process of thixomolding AZ91D magnesium alloy[D]. Changchun:Jilin University，2006.
[24] Ma Y，Guo L，Cao Y，et al. Growth mode of interfacial products of C_sf/Mg-7.6 Al composites[J]. Ceramics International，2022，48(18):26954-26963.
[25] Kandemir S，Gavras S，Dieringa H. High temperature tensile，compression and creep behavior of recycled short carbon fibre reinforced AZ91 magnesium alloy fabricated by a high shearing dispersion technique[J]. Journal of Magnesium and Alloys，2021，9(5):1753-1767.

Preparation and Stiffness Property of C_f/Mg Composite Special-shaped Thin Parts Fabricated by Liquid-solid Extrusion Following Vacuum Pressure Infiltration

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