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4. 选区激光熔化René 88DT高温合金No.5试样中的裂纹形貌
(a) low magnification
(b) morphology showing the boundary of deposition track (dash line)
(c) high magnification of cracks
Fig.4. Crack morphologies of selective laser melted René 88DT No.5 specimen
