使用添加剂制造（AM）可以通过以受控方式精确沉积材料来制造几何复杂的部件。AM硬件、软件方面的技术进步，以及新市场的开放，都要求当今产品具有更高的灵活性和更高的效率，鼓励研究具有功能梯度和高性能能力的新型材料。这被称为功能梯度添加剂制造（FGAM），是一种逐层制造技术，涉及逐步改变部件内材料组织的比例，以满足预期功能。 随着这一领域的研究在全世界引起兴趣，FGAM概念的解释需要进一步澄清。本文件的目的是从概念上理解FGAM。将回顾FGAM技术的当前技术水平和能力，以及其具有挑战性的技术障碍和限制。本文对数据交换格式和一些最新应用进行了评估，并就克服障碍的可能策略和FGAM未来的发展方向提出了建议。

The use of Additive Manufacturing (AM) enables the fabrication of geometrically complex components by accurately depositing materials in a controlled way. Technological progress in AM hardware, software, as well as the opening of new markets demand for higher flexibility and greater efficiency in today's products, encouraging research into novel materials with functionally graded and high-performance capabilities. This has been termed as Functionally Graded Additive Manufacturing (FGAM), a layer-by-layer fabrication technique that involves gradationally varying the ratio of the material organization within a component to meet an intended function. As research in this field has gained worldwide interest, the interpretations of the FGAM concept requires greater clarification. The objective of this document is to present a conceptual understanding of FGAM. The current-state of art and capabilities of FGAM technology will be reviewed alongside with its challenging technological obstacles and limitations. Here, data exchange formats and some of the recent application is evaluated, followed with recommendations on possible strategies in overcoming barriers and future directions for FGAM to take off.