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 ductilefracture.

• 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。