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| INFLUENCE OF SAMPLE THICKNESS ON THE PATTERN FORMATION IN EUTECTIC SYSTEM |
| Guanghui Meng |
| 西北工业大学凝固技术国家重点实验室 （西北工业大学543＃信箱） |
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Cite this article:
Guanghui Meng. INFLUENCE OF SAMPLE THICKNESS ON THE PATTERN FORMATION IN EUTECTIC SYSTEM. Acta Metall Sin, 2007, 43(5): 459-464 .
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Abstract Directional solidification studies have been carried out in transparent organic alloy CBr4-C2Cl6 system in order to obtain information related to influence of the sample thickness on the eutectic pattern formation and lamellar spacings adjustment mechanism in initial transient growth stage in eutectic systems. Thickness of the samples is within 16~100μm. Results showed that the capillary anisotropy affects considerably the eutectic grain formation when thickness equal to or less than 48μm due to eutectic grain consisting of titled lamellae will be form under such conditions. At the same time, in transient region the lamellar adjustment mechanism is sample thickness dependent remarkably, and which behaviors with bi-dimensional characteristics will be to occur only when sample thickness is 16μm or less.
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Received: 23 August 2006
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