Texture analysis of the development of microstructure in Cu30 at.% Ni alloy droplets solidified at selected undercoolings
Texture analysis of the development of microstructure in Cu30 at.% Ni alloy droplets solidified at selected undercoolings
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DOI：
10.1016/s1359-6454(96)00166-8
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发表时间：
1997
期刊：
影响因子：
9.4
通讯作者：
F. Gärtner;A. Norman;A. L. Greer;A. Zambon;E. Ramous;K. Eckler;D. Herlach
中科院分区：
文献类型：
--
作者：
F. Gärtner;A. Norman;A. L. Greer;A. Zambon;E. Ramous;K. Eckler;D. Herlach
对于悬浮下无容器凝固处理的Cu-Ni合金液滴，晶体织构与光学金相中看到的显微组织和凝固开始时的过冷度密切相关。织构的系统分析有助于理解微观结构的发展，特别是它是枝晶还是晶粒细化。的变化，过冷度，在树枝状样品的取向扩散，使纹理测量被用来估计最大过冷度的液滴时，温度测量是不可能的。枝晶破碎观察到的晶粒细化的贡献进行了分析，无论是低和高过冷度。
For CuNi alloy droplets processed by containerless solidification under levitation, the crystallographic texture is strongly correlated with the microstructure seen in optical metallography and with the undercooling at which solidification started. Systematic analysis of the texture is useful in understanding the development of the microstructure, in particular whether it is dendritic or grain-refined. The variation, with undercooling, of orientation spread in dendritic samples enables texture measurements to be used to estimate the maximum undercooling of a droplet when temperature measurement is not possible. The contribution of dendrite break-up to the observed grain refinement is analysed, both for low and high undercoolings.