Functionally graded materials (FGM) have great potential in various applications, but require reliable and efficient manufacturing techniques. This study proposes a preparation strategy for WCu FGM with continuous gradient structure. The W green bodies with a continuously varying W content were prepared by using a self-designed mold to control compression deformation. Subsequently, two types of WCu FGM samples were successfully fabricated through pre-sintering and infiltration processes. The W contents ranged from 64.8 wt% to 81.1 wt% and 75.3 wt% to 90.5 wt% respectively. The microstructure, density, Vickers hardness and electrical conductivity exhibited a continuous trend of change with the variation of W content. This gradient structure control method facilitated the efficient preparation of WCu FGMs with continuously varying compositions. Moreover, it could be extended to achieve the continuous variation of composition and properties in other materials prepared via infiltration techniques.

中文翻译：

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一种简单有效的 W[sbnd]Cu 功能梯度材料策略


功能分级材料 （FGM） 在各种应用中具有巨大潜力，但需要可靠和高效的制造技术。本研究提出了一种具有连续梯度结构的 WCu FGM 的制备策略。使用自行设计的模具制备了 W 含量连续变化的 W 坯体，以控制压缩变形。随后，通过预烧结和渗透工艺成功制备了两种类型的 WCu FGM 样品。W 含量分别为 64.8 wt% 至 81.1 wt% 和 75.3 wt% 至 90.5 wt%。微观组织、密度、维氏硬度和电导率随 W 含量的变化呈连续变化趋势。这种梯度结构控制方法有助于高效制备成分连续变化的 WCu FGM。此外，它可以扩展以实现通过渗透技术制备的其他材料的成分和性能的连续变化。