GH4065A合金铸态的组织和元素偏析及其均匀化

赵书伟, 孙文儒, 吕文龙, 张伟红, 邱克强

Elements Segregation and Microstructure Homogenization of Cast GH4065A Superalloy

ZHAO Shuwei, SUN Wenru, LV Wenlong, ZHANG Weihong, QIU Keqiang

表2 GH4065A合金芯部等轴晶处的成分分布及各个元素的分配系数

Table 2 Composition distribution and segregation coefficients of elements (mass fraction, %) in the core equiaxed grain region of GH4065A alloy

Element B* C* Al Ti Cr Co Ni Zr Nb Mo W Interdendrit 24.6 12.51 1.21 3.61 9.41 8.13 38.61 0.1 0.7 2.29 2.03 Dendritic trunk 21.41 12.42 1.02 1.48 9.52 8.22 34.00 0.12 0.23 1.81 3.35 k 1.15 1.01 1.19 2.44 0.99 0.99 1.14 0.83 3.04 1.27 0.61