3D打印预制体构型对互穿网络SiC/Al-10Mg复合材料压缩性能的影响

兰州理工大学学报 ›› 2025, Vol. 51 ›› Issue (4): 7-14.

3D打印预制体构型对互穿网络SiC/Al-10Mg复合材料压缩性能的影响

李沁霖¹, 刘洪军^*1,2, 王琼¹

1.兰州理工大学材料科学与工程学院, 甘肃兰州 730050;
2.兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室, 甘肃兰州 730050

收稿日期:2024-05-23 出版日期:2025-08-28 发布日期:2025-09-05
通讯作者: 刘洪军(1974-),男,河北景县人,博士,教授,博导.Email:liuhongjun@lut.edu.cn
基金资助:
甘肃省科技重大专项(22ZD6GA008)

Effect of lattice structures of 3D printed preforms on compressive properties of SiC/Al-10Mg composites with interpenetrating network structure

LI Qin-lin¹, LIU Hong-jun^1,2, WANG Qiong¹

1. School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China;
2. State Key Laboratory of Advanced Processing and recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China

Received:2024-05-23 Online:2025-08-28 Published:2025-09-05

摘要/Abstract

摘要： 采用浆料挤出3D打印工艺制备了3种构型(直线、蜂窝、网格)的SiC预制体,结合熔体浸渗工艺制备了互穿网络SiC/Al-10Mg复合材料,重点研究了复合材料的压缩性能.结果表明:SiC/Al-10Mg复合材料的压缩性能呈现明显的各向异性;蜂窝构型与网格构型复合材料的载荷-位移曲线形状相似,与直线构型复合材料有很大区别;复合材料均显示为较明显的压缩脆性;预制体的打印高度方向,网格构型复合材料的抗压强度最高(519 MPa),而直线构型复合材料的抗压强度最低(396 MPa);预制体的打印平面方向,直线构型复合材料的抗压强度最高(556 MPa),而网格构型复合材料的抗压强度最低(266 MPa).表明通过3D打印预制体构型可以有效调控互穿网络金属基复合材料的力学性能.

关键词: 互穿网络结构, 3D打印, 构型, 压缩性能, SiC/Al-10Mg复合材料

Abstract: The SiC preforms with three lattice structures (linear, honeycomb, grid) were fabricated using slurry extrusion 3D printing technology, and the SiC/Al-10Mg composites were prepared by combining melt infiltration technique. The compressive properties of the composites were mainly investigated. The results showed that the compressive properties of SiC/Al-10Mg composites exhibit significant anisotropy. The load-displacement curves of honeycomb structure and grid structure exhibit similar profiles, but differ greatly from those of rectilinear structure. Compressive brittleness is obvious in these composites. Along the height direction of preform printing, the composite with grid structure exhibits the highest compressive strength (519 MPa), whereas the composite with rectilinear structure displays the lowest compressive strength (396 MPa). Along the plane direction of preform printing, the composite with rectilinear structure possesses the highest compressive strength (556 MPa), whereas the composite with grid structure shows the lowest compressive strength (266 MPa). This indicates the mechanical properties of metal matrix composites with interpenetrating network structures can be effectively controlled by 3D-printed preforms with lattice structures.

Key words: interpenetrating network structure, 3D printing, lattice structure, compressive propert, SiC/Al-10Mg composite materials

中图分类号:

TB331

李沁霖, 刘洪军, 王琼. 3D打印预制体构型对互穿网络SiC/Al-10Mg复合材料压缩性能的影响[J]. 兰州理工大学学报, 2025, 51(4): 7-14.

LI Qin-lin, LIU Hong-jun, WANG Qiong. Effect of lattice structures of 3D printed preforms on compressive properties of SiC/Al-10Mg composites with interpenetrating network structure[J]. Journal of Lanzhou University of Technology, 2025, 51(4): 7-14.

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