激光增材制造高温合金材料与工艺研究进展

孙晓峰, 宋巍, 梁静静, 李金国, 周亦胄

Research and Development in Materials and Processes of Superalloy Fabricated by Laser Additive Manufacturing

SUN Xiaofeng, SONG Wei, LIANG Jingjing, LI Jinguo, ZHOU Yizhou

图6 增材制造高温合金典型的微观组织及演变[34~37] (a) columnar dendrite[34] (b) characteristics of the molten pool[35] (c) schematic diagram of equiaxed crystal growth[36] (d) schematic diagram of structure evolution (G—temperature gradient)[37]

Fig.6 Typical structure and evolution of additive manufacturing superalloys