Thermal Analysis and Microstructural Evaluation of Inconel 738LC Superalloy Gas Turbine Blade
Publish Year: 1399
Type: Journal paper
Language: English
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Document National Code:
JR_JEFM-4-2_004
Index date: 19 December 2020
Thermal Analysis and Microstructural Evaluation of Inconel 738LC Superalloy Gas Turbine Blade abstract
The operational temperature of a gas turbine blade made of IN738LC superalloy was investigated. The component under evaluation was a first stage blade of a 25MW power plant gas turbine with the gas temperature of 943 in the first stage nozzle at the base load. The evaluation was carried out after 16000 h of operation in the mode of base load. To analyze the temperature distribution of the component, three 3D-models of the blade were prepared, meshed and analyzed using CFD software. The results indicate the higher temperatures in the upper section of the leading edge during steady state operation of the blade.To evaluate the reliability of this analysis, intermetallic coarsening behavior was examined as the most important microstructural changes of the alloy after long term service exposure. This metallographic analysis also approves increasing in temperature with height of the airfoil section.
Thermal Analysis and Microstructural Evaluation of Inconel 738LC Superalloy Gas Turbine Blade Keywords:
Thermal Analysis and Microstructural Evaluation of Inconel 738LC Superalloy Gas Turbine Blade authors
Rayatpour M
Niroo Research Institute (NRI), Tehran, Iran
Lalegani Z
Niroo Research Institute (NRI), Tehran, Iran
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