Naturally architected microstructures in structural materials via additive manufacturing
Naturally architected microstructures in structural materials via additive manufacturing
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DOI：
10.1016/j.addma.2020.101243
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发表时间：
2020-08-01
影响因子：
11
通讯作者：
Bandyopadhyay, Amit
中科院分区：
文献类型：
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作者：
Traxel, Kellen D.;Bandyopadhyay, Amit
尽管我们对天然结构材料（如珍珠层和人骨）的独特机械行为的理解最近取得了进展，但传统的制造策略限制了我们使用现有结构材料和制造工艺模仿这种自然灵感结构的能力。为此，我们介绍了一种可定制的单步方法，用于增材制造无几何形状的金属基结构复合材料，显示方向定制的，位置特定的属性。为了证明这种能力，我们提出了一种层状金属陶瓷复合材料，以前没有报道，表现出显着的方向和特定地点的依赖性的属性沿着裂纹滞止能力难以实现使用传统的制造方法。我们的研究结果表明，自然启发的微结构设计方向属性可以实现在结构部件使用一种新的增材制造方法。
Despite recent advances in our understanding of the unique mechanical behavior of natural structural materials such as nacre and human bone, traditional manufacturing strategies limit our ability to mimic such nature-inspired structures using existing structural materials and manufacturing processes. To this end, we introduce a customizable single-step approach for additively fabricating geometrically-free metallic-based structural composites showing directionally-tailored, location-specific properties. To exemplify this capability, we present a layered metal-ceramic composite not previously reported exhibiting significant directional and site-specific dependence of properties along with crack arrest ability difficult to achieve using traditional manufacturing approaches. Our results indicate that nature-inspired microstructural designs towards directional properties can be realized in structural components using a novel additive manufacturing approach.