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Influence of heat treatment on properties of hot isostatically pressed turbine blade superalloy in738

Farahany, Saeed and Aghaie-Khafri, M. and Ourdjini, Ali and Idris, Mohd. Hasbullah (2011) Influence of heat treatment on properties of hot isostatically pressed turbine blade superalloy in738. Advanced Materials Research, 264-26 . pp. 502-507. ISSN 1022-6680

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Official URL: http://dx.doi.org/10.4028/www.scientific.net/AMR.2...

Abstract

Impact of heat treatment on hot isostatically pressed (HIP) Ni-base superalloy has been investigated before and after conducting HIP process. HIP was performed by applying a stress of 120 MPa at a temperature of 1200 °C for 2 hours under argon atmosphere followed by furnace cooling to room temperature. Heat treatment cycle was conducted on the samples according to GEB50A563. Microstructural observation demonstrated the deleterious change of ??? morphology after HIP process which causes to decrease of hardness and creep strength. However, pre heat treatment in compared with cast specimen show slight changes in microstructure but, post heat treatment can revert this change of ??? morphology completely and also increase the mechanical properties.

Item Type:Article
Uncontrolled Keywords:heat treatment, Hot Isostatic Pressing (HIP), Superalloy
Subjects:Q Science > QC Physics
Divisions:Mechanical Engineering
ID Code:44981
Deposited By: Haliza Zainal
Deposited On:27 Apr 2015 12:50
Last Modified:20 Sep 2017 11:23

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