Abstract

Cu9Ni6Sn alloys were prepared by conventional casting (CC) and twin-roll casting (TRC). The CC-processed specimens possessed dendritic structures, and Sn was distributed mainly in the inter-dendritic region and formed dendritic segregation. The TRC-processed specimens were composed of equiaxed grains and a heterogeneous structure. The distribution of Sn showed gradient characteristics, with more Sn in the surface layer and less Sn in the center. The TRC-processed specimens had more inhomogeneous mechanical properties than the CC-processed specimens.

中文翻译：

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常规铸造和双辊铸造Cu9Ni6Sn合金的组织，元素分布和力学性能

摘要

通过常规铸造（CC）和双辊铸造（TRC）制备Cu9Ni6Sn合金。经过CC处理的标本具有树枝状结构，并且Sn主要分布在树枝状区域之间，并形成树枝状偏析。经TRC处理的标本由等轴晶粒和异质结构组成。Sn的分布具有梯度特性，表层Sn多，中心Sn少。TRC处理的样品比CC处理的样品具有更不均匀的机械性能。