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首页> 外文期刊>ISIJ international >Modification of the Primary and Peritectic Phases in Directionally Solidified Cu-20 wt.% Sn Alloy by Magnetic Field
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Modification of the Primary and Peritectic Phases in Directionally Solidified Cu-20 wt.% Sn Alloy by Magnetic Field

机译：磁场对定向凝固Cu-20 wt。％Sn合金主相和包晶相的改性

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Directional solidification experiments on Cu-20 wt.% Sn peritectic alloy were carried out in a direct current magnetic field device to investigate the modification of the primary and peritectic phases. A precipitation of the acicular martensitic structure of peritectic phase was observed below the solid-liquid interface. The magnetic field increased the length of precipitation zone and moved the solid-liquid interface to high temperature side. Solid-state transformation of the peritectic phase was observed below the eutectoid temperature. The magnetic field increased first and then decreased the transformation. A transition of the primary dendrites from arrayed to nonaligned growth under the magnetic field was characterized and analyzed. 3D numerical simulations of the thermoelectric magnetic flows and the thermoelectric magnetic forces were performed. The modification of the primary and peritectic phases under the magnetic field should be attributed to the fluid flows in the liquid and the forces on the solid.
机译：在直流磁场装置中进行了Cu-20 wt。％Sn包晶合金的定向凝固实验，研究了初生相和包晶相的变质。在固液界面以下观察到包晶相的针状马氏体结构的沉淀。磁场增加了沉淀区的长度并使固液界面移至高温侧。在共析温度以下观察到包晶相的固态转变。磁场先增大，然后减小转换。表征并分析了在磁场作用下原始枝晶从排列生长到不排列生长的转变。进行了热电磁流和热电磁力的3D数值模拟。磁场下初生相和包晶相的改变应归因于液体中的流体流动和固体上的力。

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