During the last two decades, many algorithms were developed to simulate the solidification process for different casting methods like ingots, continuous casting of steel and the direct chill cast of aluminum. Experiments performed under exactly known conditions and with the detailed knowledge of meso- and micro-structures are required for validating these simulations. The aim of this paper is to give a data set to validate these simulations. Unidirectional solidification experiments were performed by using a rotating magnetic field (RMF) to study the effect of melt flow on the solidified micro- and meso-structure of the Al–7wt.% Si binary alloy. The first and the third 1/3 parts of samples were solidified without magnetic stirring, and the second (middle) 1/3 part was solidified by using magnetic stirring. The magnetic induction was 10 mT, the temperature gradient was ∼7 K/mm, and the sample movement velocity was 0.1 mm/s. On the longitudinal section of the sample, the columnar/equiaxed transition (CET), the equiaxed/columnar transition (ECT), the secondary dendrite arm spacing (SDAS), and the macrosegregation (concentration distribution and the amount of eutectic) were investigated. The primary dendrite arm spacing (PDAS) and the grain structure were studied on the cross-section after color etching.

在过去的二十年里，开发了许多算法来模拟不同铸造方法的凝固过程，如钢锭、钢的连续铸造和铝的直接冷铸。为了验证这些模拟，需要在完全已知的条件下进行实验并详细了解细观和微观结构。本文的目的是提供一个数据集来验证这些模拟。通过使用旋转磁场 (RMF) 进行单向凝固实验，以研究熔体流动对 Al-7wt.% Si 二元合金凝固微观和细观结构的影响。样品的第一和第三份1/3在无磁力搅拌下凝固，第二（中间）1/3份样品在磁力搅拌下凝固。磁感应强度为 10 mT，温度梯度约为 7 K/mm，样品移动速度为 0.1 mm/s。在样品的纵向截面上，研究了柱状/等轴转变（CET）、等轴/柱状转变（ECT）、二次枝晶臂间距（SDAS）和宏观偏析（浓度分布和共晶量）。在彩色蚀刻后的横截面上研究了初级枝晶臂间距（PDAS）和晶粒结构。