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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Application of dendrite fragmentation to fabricate the homogeneous dispersed structure in undercooled Cu-Co immiscible alloy
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Application of dendrite fragmentation to fabricate the homogeneous dispersed structure in undercooled Cu-Co immiscible alloy

机译：枝晶碎裂在过冷Cu-Co不混溶合金中制备均匀分散结构的应用

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摘要

The dependence of microstructure on undercooling for Cu_(50)Co_(50) immiscible alloy and the relations between dendrite fragmentation and liquid phase separation were studied by melt-fluxing in combination with cyclic superheating. It is shown that homogeneous dispersed structure can be obtained by dendrite fragmentation because of the increased solute content in primary dendrite, which is advantageous for strengthening dendrite remelting effect and thermal plateau time following recalescence. As for the sample after liquid separation, typical dual-layer structure forms, while dendrite fragmentation still exists and its extent, volume fraction are influenced by the solute contents of two immiscible layers. Quantitative thermodynamic calculation was further performed to support the experimental results.
机译：通过熔熔结合循环过热研究了Cu_（50）Co_（50）不混溶合金的微观结构对过冷的依赖性以及枝晶碎裂与液相分离之间的关系。结果表明，由于一次枝晶中固溶体含量的增加，可以通过枝晶碎裂获得均匀的分散结构，有利于增强枝晶的重熔效果和重结晶后的热平稳时间。对于液体分离后的样品，典型的双层结构形成，而枝晶碎片仍然存在，并且其程度，体积分数受两个不混溶层的溶质含量影响。进一步进行定量热力学计算以支持实验结果。

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