Abstract The objective of the present Viewpoint set is to elucidate the state-of-art of this growing research field. Several key issues on mechanical properties/performance and mechanism of heterogeneous materials, mainly focus on gradient and laminated structures, will be addressed. Experimental studies combined with simulation and modeling are focusing on revealing the underlying mechanism of heterogeneous structures.

中文翻译：

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观点集的前言：异质梯度和层压材料

摘要 当前观点集的目的是阐明这个不断发展的研究领域的最新技术。将解决关于异质材料的机械性能/性能和机制的几个关键问题，主要集中在梯度和层状结构上。结合模拟和建模的实验研究重点是揭示异质结构的潜在机制。