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Paper
Title

Determination of solution temperature in an ex-service Ni-based turbine blade

Year: 1396
COI: JR_JMATPR-5-3_007
Language: EnglishView: 32
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Authors

Mohammad Shademani - Materials and Energy Research Center
Mohamadreza Rahimipour - Materials and Energy Research Center
Ali Sedaghat - Materials & Energy Research Center
Mohammad Farvizi - Materials and Energy Research Center

Abstract:

It is well-known that the harsh operational conditions of turbine blades lead to a gradual change in the microstructure of underlying Ni-based superalloy of blades. According to this, a rejuvenation process should be conducted on turbine blades superalloys to recover their microstructures. The first and main step of rejuvenation process is the determination of appropriate solution condition in which ϒʹ precipitates dissolve in the ϒ matrix. In this study, different heat treatment conditions were applied on a Ni-based single crystal superalloy to determine its solution condition. The results of scanning electron microscopy (SEM) studies showed that with increasing the solution treatment temperature from ۱۲۷۵°C (۳h) to ۱۳۳۰°C (۳h), first, ϒʹ precipitates at dendritic regions dissolve and only after increasing the solution temperature to ۱۳۵۰°C (۳h), complete solution of ϒʹ phase occurs. The full solution condition (۱۳۵۰°C-۳h) will be used as the first step of the rejuvenation process of these blades in future studies.

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Paper COI Code

This Paper COI Code is JR_JMATPR-5-3_007. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/1282676/

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Shademani, Mohammad and Rahimipour, Mohamadreza and Sedaghat, Ali and Farvizi, Mohammad,1396,Determination of solution temperature in an ex-service Ni-based turbine blade,https://civilica.com/doc/1282676

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Type of center: پژوهشگاه دولتی
Paper count: 1,779
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