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Article: Application of a Heat Conductor Technique in the Production of Single-Crystal Turbine Blades
- Article from:
- Metallurgical and Materials Transactions
- Article date:
- October 1, 2009
- Author:
CopyrightCopyright Minerals, Metals & Materials Society and ASM International Oct 2009. Provided by ProQuest LLC. (Hide copyright information)
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The heat conductor (HC) technique was applied in the production of single-crystal turbine blades with the aim of reducing grain defects originating from a geometrical feature. Because of its excellent thermal-physical properties, graphite is recommended as HC material. Numerical simulation and temperature measurements were able to prove that the thermal condition in the shroud region of turbine blades is significantly improved for single-crystal growth. The reduction in thermal undercooling entirely eliminated the high-angle boundary, resulting in an effective improvement in the casting quality of components.
DOI: 10.1007/s11663-009-9274-7
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