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激光选区熔化-熔体浸渗制备层状多金属复合材料

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多金属复合材料可集成单一组元的特性,获得传统材料难以实现的高强韧和多功能特性,具有广阔应用前景.在此,提出了激光选区熔化和真空熔体浸渗技术制备层状多金属复合材料的新思路.以Cu/316L为模型材料,成功制备了拥有精细层状结构的复合材料,探究了构型变化对复合材料性能的影响.结果表明,复合材料性能具有明显的各向异性.随着316L层厚200、500、1000μm的增大,复合材料的抗压强度和弹性模量增大,导电性略有减小,分别可达纯铜的1.96、1.34和0.9倍.得益于结构优化(微米级层状)和组分选择(铜和不锈钢),复合材料同时拥有优异的强韧性和良好的导电性.此外,提供的方法新颖、普适性强,为设计和制备高性能多功能复合材料提供了新途径.
Preparation of Lamellar Multi-metal Composites by Selective Laser Melting and Melt Infiltration
Using Cu/316L as a model material,composites with delicate lamellar structure were prepared,and the effect of configuration variations on the properties of the composites was investigated.The results show that the properties of the lamellar composites are significantly anisotropic.With the increase in the thickness of the 316L layer from 200 μm to 1000 μm,the compressive strength and the elastic modulus of the composites increase,and the electrical conductivity slightly decreases,reaching 1.96,1.34,and 0.9 times of that of pure copper,respectively.Owing to the structural optimization(micron-scale laminations)and component selection(copper and stainless steel),the composites possess both outstanding toughness and good electrical conductivity.Moreover,the methodology provided in this work is novel and universal,providing a new approach for the design and preparation of high-performance and multifunctional composites.

multi-metal compositeslamellar structuresadditive manufacturingmelt infiltration

袁斌、杨立凯、倪聪、林巧力

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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

苏州健雄职业技术学院,江苏苏州 215000

多金属复合材料 层状结构 增材制造 熔体浸渗

2024

稀有金属材料与工程
中国有色金属学会,中国材料研究学会,西北有色金属研究院

稀有金属材料与工程

CSTPCD北大核心
影响因子:0.634
ISSN:1002-185X
年,卷(期):2024.53(12)