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All machinery systemsNi-based superalloys areHigh-temperature alloys madeHeat treatment and service-induced aging up of several parts and each one of these parts has a certain service life. Identifying the lifetime of high-temperatureTemperature alloys is a very essential part in the functionality of mechanical turbines. These high-temperatureTemperature alloys are exposed to many stressors whether it is mechanical, thermal, etc., that degrade the quality of the material over time. Performing analytical evaluation of these alloys plays a critical role in giving us a better understanding of how these materials age over time. One of the main techniques used to perform such analytical evaluations is the pairing of SEM–EDS technologies to analyze the microstructureMicrostructure of the materials. This allows for a reasonable understanding of the phase transformationPhase transformation happening in the material. In this work, the effects of heat treatment, service effect, and aging on alloys are analyzed and studied using some of the advanced characterizationCharacterization methods. A simplified methodology of measuring the precipitate densityDensity is proposed in studying the aging properties of IN738 alloy.

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Characterization of Long-Term Service Effect on Turbine Blade Alloy

  • 会议论文

  • 发表日期：

    2025年

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  • AlWaleed Alduaij,
  • Hariharan Sundaram,
  • Mohammed Akbar

摘要

All machinery systemsNi-based superalloys areHigh-temperature alloys madeHeat treatment and service-induced aging up of several parts and each one of these parts has a certain service life. Identifying the lifetime of high-temperatureTemperature alloys is a very essential part in the functionality of mechanical turbines. These high-temperatureTemperature alloys are exposed to many stressors whether it is mechanical, thermal, etc., that degrade the quality of the material over time. Performing analytical evaluation of these alloys plays a critical role in giving us a better understanding of how these materials age over time. One of the main techniques used to perform such analytical evaluations is the pairing of SEM–EDS technologies to analyze the microstructureMicrostructure of the materials. This allows for a reasonable understanding of the phase transformationPhase transformation happening in the material. In this work, the effects of heat treatment, service effect, and aging on alloys are analyzed and studied using some of the advanced characterizationCharacterization methods. A simplified methodology of measuring the precipitate densityDensity is proposed in studying the aging properties of IN738 alloy.