Microstructural and Phase Analysis of Service-Exposed Ni-Cr Alloy Turbine Blade

Nuzul Hazwani Mohamad Hanafi; Astuty Amrin

doi:10.4028/www.scientific.net/KEM.659.340

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 659Microstructural and Phase Analysis of...

Microstructural and Phase Analysis of Service-Exposed Ni-Cr Alloy Turbine Blade

Abstract:

Ni-Cr superalloy has been widely used in turbomachinery equipments. Gas turbine blade made from Ni-Cr superalloys experience the effect of high temperature and stress during service which certainly cause various microstructural changes. It is found that the formation of spheroidal gamma prime (γ') phase replacing the cuboidal γ' phase and also the formation of M₂₃C₆ carbides along the grain boundaries. Numerous previous study has been conducted and reported that the microstructure of the turbine blade are being modified by service. This study involved assessing changes in blade microstructure and microhardness as a function of service time.

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Periodical:

Key Engineering Materials (Volume 659)

Pages:

340-344

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.659.340

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Online since:

August 2015

Authors:

Nuzul Hazwani Mohamad Hanafi, Astuty Amrin*

Keywords:

Gas Turbine Blade, Microstructure, Nickel-Based Superalloy, Service-Exposed

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