Pb-Al合金定向凝固组织形成过程

李彦强, 赵九洲, 江鸿翔, 何杰

Microstructure Formation in Directionally Solidified Pb-Al Alloy

LI Yanqiang, ZHAO Jiuzhou, JIANG Hongxiang, HE Jie

图1 Pb-Al合金局部相图及定向凝固条件下Pb-Al合金液-固分相过程示意图

Fig.1 Pb-rich part of the Pb-Al phase diagram (a) and the liquid-solid phase separation process in a directionally solidifying Pb-Al alloy (b) (T—temperature, LAl—Al-rich liquid phase, SAl—Al-rich solid phase, LPb—Pb-rich liquid phase, SPb—Pb-rich solid phase, C0—initial composition of the alloy, Ts(C0)—solubility line temperature of initial composition alloy, Te—eutectic reaction temperature of Al-Pb alloy, rOz—coordinate system, V0—pulling velocity of samples, g —acceleration of gravity, L—liquid, S—solid)