Lennard-Jones Centre for Computational Materials Science

Segregation of alloying elements to intrinsic and extrinsic stacking faults in γ′-Ni<inf>3</inf>Al via first principles calculations

Eurich, NC and Bristowe, PD (2015) Segregation of alloying elements to intrinsic and extrinsic stacking faults in γ′-Ni<inf>3</inf>Al via first principles calculations. Scripta Materialia, 102. pp. 87-90. ISSN 1359-6462

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Abstract

© 2015 Acta Materialia Inc. First principles calculations are used to investigate the segregation behaviour of Co, Cr, Re, Mo and W to intrinsic and extrinsic stacking faults in γ′-Ni3Al. It is shown that the change in stacking fault energy depends on local alloying concentration and is related to subtle changes in the electronic structure of the alloying elements and adjacent nickel atoms. The results are consistent with observed stacking fault segregation in commercial superalloys and in particular the behaviour of Co and Cr.

Item Type: Article
Uncontrolled Keywords: CMSX-4 First principles calculations Ni3Al Segregation Stacking faults
Subjects: UNSPECIFIED
Divisions: UNSPECIFIED
Depositing User: Unnamed user with email sms67@eng.cam.ac.uk
Date Deposited: 23 Apr 2015 01:39
Last Modified: 19 Jan 2021 10:42
DOI: 10.1016/j.scriptamat.2015.02.020

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