搭接工艺对选区激光熔化镍基单晶高温合金DD491晶体取向与微观组织的影响

张振武, 李继康, 许文贺, 沈沐宇, 戚磊一, 郑可盈, 李伟, 魏青松

Effects of Overlapping Process on Grain Orientation and Microstructure of Nickel-Based Single-Crystal Superalloy DD491 Fabricated by Selective Laser Melting

ZHANG Zhenwu, LI Jikang, XU Wenhe, SHEN Muyu, QI Leiyi, ZHENG Keying, LI Wei, WEI Qingsong

图9 S4工艺下不同扫描间距多道搭接试样的y-z面晶体取向图和取向偏差

Fig.9 Crystal orientation maps of S4 multi-track overlapping samples in the y-z plane under scanning hatches of 0.06 mm (a), 0.09 mm (b), and 0.12 mm (c); distribution of grain misorientation angle from point A to B in Fig.9a (d)