搭接工艺对选区激光熔化镍基单晶高温合金<strong>DD491</strong>晶体取向与微观组织的影响

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15 熔池内[001]、[010]、[100]晶体生长方向示意图

Fig.15 Schematic of the [001], [010], and [100] grain growth directions in the melt pool (θ—the angle between $V_{u v w}$ and X-axis, ξ—the angle between the projection of $V_{u v w}$ on the Y-Z plane and Y-axis)