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14. 不同热输入条件下René 88DT高温合金试样的枝晶生长及晶粒形成规律
Fig.14. Schematics showing the dendritic growth and grain evolution of selective laser melted René 88DT superalloy under A=90° and heat inputs of 47 J/mm3 (a), 57 J/mm3 (b), and 95 J/mm3 (c) (The red arrows indicate the directions of maximum temperature gradient)
