材料科学
复合材料
合金
制作
钢筋
复合数
陶瓷
金属
冶金
医学
病理
替代医学
作者
Jiaying Zhai,Wenhong Gao,Haokai Dong,Yuan‐Chao Hu,T. Zhang,Xuguang Zhu,Wen-fei Zhang,Cen Yang,L.H. Liu
标识
DOI:10.1016/j.apmt.2022.101649
摘要
Although various methods have been developed to manufacture metal matrix composites (MMCs), most of the currently employed methods use discontinued crystalline ceramic particles as reinforcements. Herein, we report a new approach of reinforcing metals using a three-dimensional metallic glass (MG) lattice. Specifically, the processing route involves additive manufacturing of a stainless-steel matrix scaffold containing a continuous lattice-structured cavity and subsequent high-pressure injection of a Zr-based glass-forming liquid into the scaffold. Our results demonstrate that the as-produced composites reinforced with 30 vol% MG in the form of a body-centered-cubic lattice possess excellent mechanical properties. Remarkably, the plasticity is higher than those of some particle-reinforced stainless-steel composites and most conventional ex situ MG matrix composites. The enhanced performances mainly arise from the well-designed structure, good combination of the hard MG and soft stainless steel, and their mutual reinforcement mechanism. This study not only reveals a new class of composites reinforced with lattice-structured MG that overcome the limitation of MG reinforcement, rendering it suitable for reinforcing high-melting-point materials, but also provides a novel design concept and fabrication approach that could be extended to other alloy systems for achieving improved mechanical properties.
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