The functionally gradient material(FGM)is a non-homogeneous composites which feature a gradual change in properties with the gradient or continuous change of component from one surface to the other.

• 性能渐变材料（FGM）是其组成（成分）从一个面到另一个面呈阶梯变化或连续变化，而其性能也随之渐逐变化的非均质复合材料。