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Rapid solidification of a molten binary alloy colliding with substrates: (two-dimensional model considering supercooling for pure metal)

机译：熔融二元合金与基材碰撞的快速凝固:(考虑纯金属过冷的二维模型）

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A numerical model is developed to investigate deformation and solidification of a supercooled molten metal droplet impinging on substrates. The mathematical formulations are numerically solved using a Lagrangian finite element technique. The finite element nodes on freezing interfaces are moved to track the interface accurately. The solidification of a molten tin droplet quenched on a stainless steel substrate is investigated. The solidification initiates at the periphery of the splat if equilibrium solidification is assumed. However, that of the supercooled droplet initiates at the center region of the splat. The initial temperature of the droplet affects the interface temperature and the interface velocity at the initial stage, and does not affect them at the latter stage. The freezing interface at the center of the splat develops at a constant velocity at the latter stage.
机译：开发了一种数值模型，以研究撞击衬底上的过冷熔融金属液滴的变形和凝固。使用拉格朗日有限元技术进行数值求解数学制剂。冻结接口上的有限元节点被移动以准确地跟踪界面。研究了在不锈钢基板上淬灭的熔融锡液滴的凝固。如果假设平衡凝固，则凝固在Splat的周边开始。然而，过冷液滴的液滴在Splat的中心区域开始。液滴的初始温度会影响初始阶段的界面温度和界面速度，并且不会影响后一阶段。 SPLAT中心处的冰冻界面在后级的恒定速度下显影。

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