微重力条件下<strong>Gd-Co-Ti</strong>合金原位粒子复合凝固组织的形成

微重力条件下Gd-Co-Ti合金原位粒子复合凝固组织的形成

孙昊, 江鸿翔, 赵九洲, 张丽丽, 何杰

Formation of In Situ Particle Composite Solidification Microstructure of Gd-Co-Ti Alloy Under Microgravity Conditions

SUN Hao, JIANG Hongxiang, ZHAO Jiuzhou, ZHANG Lili, HE Jie

图8 直径为445 μm的Gd-2%Co-2%Ti合金样品心部基体熔体过饱和度(S)，富TiCo相液滴的形核率(I_D)、N_D、平衡体积分数(φ $_{l}^{e}$ )、实际体积分数(φ_l)，以及初生富Gd固相的平衡体积分数(φ $_{s}^{m}$ )随时间的变化

Fig.8 Supersaturation of the matrix liquid (S), nucleation rate (I_D) and number density (N_D) of the TiCo-rich droplets (a), equilibrium volume fraction (φ $_{l}^{e}$ ) and actual volume fraction (φ_l) of the TiCo-rich droplets, equilibrium volume fraction (φ $_{s}^{m}$ ) of the primary Gd-rich solid phase (b) at the center region of the Gd-2%Co-2%Ti alloy sample with a diameter of 445 μm as a function of t