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11. 采用不同扫描速率制备的René 88DT高温合金试样晶粒组织
(a-c) 720 mm/s (d-f) 960 mm/s (g-i) 1200 mm/s
Fig.11. Grain structures of selective laser melted René 88DT specimens fabricated with different scanning speeds in YOZ sections (a, d, g), XOZ sections (b, e, h), and XOY sections (c, f, i)
