脉冲电流作用下<strong>Pb-Al</strong>合金的液<strong>-</strong>固分相过程

脉冲电流作用下Pb-Al合金的液-固分相过程

李彦强, 赵九洲, 江鸿翔, 张丽丽, 何杰

Liquid-Solid Phase Separation Process of Pb-Al Alloy Under the Effect of Electric Current Pulses

LI Yanqiang, ZHAO Jiuzhou, JIANG Hongxiang, ZHANG Lili, HE Jie

图12 不同j_max条件下Pb-0.15Al合金中心轴线处熔体温度( $T$ )、 $S$ 及 $I$ 沿 $z$ 轴变化曲线

Fig.12 Curves of $T$ , $S$ and $I$ vs $z$ with j_max values being 0 A/m² (a), 4 × 10⁸ A/m² (b), 6 × 10⁸ A/m² (c), and 8 × 10⁸ A/m² (d), respectively ( $I_{I}$ —Al-rich particles' nucleation rate at the moment of $j = j_{m a x}$ ; $I_{I I}$ —Al-rich particles' nucleation rate during the period of $j = 0$ . The parameter with subscript “max” refers to the maximum value for the corresponding parameter)