选区激光熔化René 88DT高温合金的晶粒组织及冶金缺陷调控
刘健1,2, 彭钦1,2, 谢建新1,2()
Grain Structure and Metallurgical Defects Regulation of Selective Laser Melted René 88DT Superalloy
LIU Jian1,2, PENG Qin1,2, XIE Jianxin1,2()

图12. 选区激光熔化René 88DT镍基高温合金No.3试样显微组织

Fig.12. Low (a) and high (b) magnified SEM images, and TEM image (c) of selective laser melted René 88DT No.3 specimen