700℃热暴露对 β 凝固 γ-TiAl合金表面组织及形貌的影响

刘仁慈, 王鹏, 曹如心, 倪明杰, 刘冬, 崔玉友, 杨锐

Influence of Thermal Exposure at 700oC on the Microstructure and Morphology in the Surface of β-Solidifying γ-TiAl Alloys

LIU Renci, WANG Peng, CAO Ruxin, NI Mingjie, LIU Dong, CUI Yuyou, YANG Rui

表3 样品热暴露表面氧化产物EDS分析结果 (mass fraction / %)

Table 3 Chemical composition of oxide in the surface of exposed samples in Fig.3

Position Phase Constitute O Al Ti Nb Mo 1 Equiaxed β0 30.96 16.93 44.11 6.33 1.67 2 Equiaxed γ 21.99 22.99 47.11 7.05 0.85 3 γ lamellar 24.47 20.75 46.51 6.95 1.33 4 α2 lamellar 28.67 18.28 45.35 6.27 1.43 5 γ lamellar 42.31 18.37 34.29 4.50 0.53 6 α2 lamellar 46.86 19.76 28.79 3.82 0.77 7 Equiaxed β0 51.00 4.38 43.96 0.66 0.00 8 Equiaxed γ 44.42 14.32 37.00 3.74 0.52