Effect of Al and Ti Additions in Cast Nickel Base Alloy, Grade Hastelloy X by Arc Melting Process on Microstructures and Oxidation Behavior at 900°C and 1000°C

Pajaree Srigiofun; Panyawat Wangyao; Gobboon  Lothongkum; Ekasit Nisaratanaporn

doi:10.4028/www.scientific.net/AMM.548-549.274

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 548-549Effect of Al and Ti Additions in Cast Nickel Base...

Effect of Al and Ti Additions in Cast Nickel Base Alloy, Grade Hastelloy X by Arc Melting Process on Microstructures and Oxidation Behavior at 900°C and 1000°C

Abstract:

The nickel base alloy, grade Hastelloy X was modified by Aluminum and Titanium additions by means of vacuum arc melting process in order to improve microstructural characteristics and oxidation resistance. The arc melted Hastelloy X was added Aluminum and Titanium each for 2%, 4% and 6% by weight. Then all specimens were performed with heat treatment, which consists of solutioning treatment at 1125°C for 24 hours and precipitation aging at temperatures of 760°C, 800°C and 845°C for 24 hours. Both aluminum and titanium additions resulted in network intermetalic phase formation, namely, σ-phase, throughout the matrix. Furthermore, the addition of both elements provided the better oxidation resistance for the alloys.

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Periodical:

Applied Mechanics and Materials (Volumes 548-549)

Pages:

274-279

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.548-549.274

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Online since:

April 2014

Authors:

Pajaree Srigiofun*, Panyawat Wangyao, Gobboon Lothongkum, Ekasit Nisaratanaporn

Keywords:

Hastelloy X, Nickel Base Superalloy, Oxidation Resistance

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