重力对镍基单晶高温合金枝晶生长和微观偏析的影响

孔亚非, 罗兴宏, 李洋, 刘实

Effect of Gravity on Dendrite Growth and Microsegregation of Ni-based Single Crystal Superalloy

KONG Yafei, LUO Xinghong, LI Yang, LIU Shi

表3 重力和微重力样品中枝晶干和枝晶间的成分

Table 3 Compositions of dendrite trunk and interdendritic area in 1g and μg samples

Element / %,mass fraction 1g sample μg sample Dendrite trunk / cd Interdendrite / ci kseg Dendrite trunk / cd Interdendrite / ci kseg Al 5.26 7.29 0.722 5.68 7.03 0.808 Cr 9.36 12.20 0.767 9.42 12.03 0.783 Ta 1.81 3.78 0.479 1.36 3.28 0.415 W 10.99 4.20 2.617 11.22 5.55 2.022 Ni 72.58 72.53 - 72.32 72.11 -