The relative density of the sample has reached as high as 97 . 4 % of fully dense . the mean micro hardness has reached hv496 . 3 . the fractography of the fracture section of the tensile sample was characteristic of dimple typically which indicated that the fracture belong to ductile fracture ；试样相对密度可以达到理论值的97 . 4 ；硬度方面由于激光立体成形工艺的特点，最后几层的硬度比开始时的高，平均硬度达到了hv496 . 3 ；拉伸试样的断口形貌具有典型的韧窝特征，属于延性断裂。
