Enhancing strength and γ’-coarsening resistance through micro-alloying additions to an oxidation resistant Al-Co-Cr-Fe-Ni-Ti compositionally complex alloy

Joseph, Jithin; Annasamy, Murugesan; Hodgson, Peter; Barnett, Matthew; Fabijanic, Daniel

Enhancing strength and γ’-coarsening resistance through micro-alloying additions to an oxidation resistant Al-Co-Cr-Fe-Ni-Ti compositionally complex alloy

journal contribution

posted on 2025-03-25, 04:55 authored by Jithin JosephJithin Joseph, Murugesan Annasamy, Peter HodgsonPeter Hodgson, Matthew BarnettMatthew Barnett, Daniel FabijanicDaniel Fabijanic

Enhancing strength and γ’-coarsening resistance through micro-alloying additions to an oxidation resistant Al-Co-Cr-Fe-Ni-Ti compositionally complex alloy

History

Journal

Journal of Alloys and Metallurgical Systems

Volume

8

Article number

100122

Pagination

100122-100122

Location

Amsterdam, The Netherlands

Open access

Yes

ISSN

2949-9178

eISSN

2949-9178

Language

English

Notes

• Micro-alloyed Al-rich Al-Co-Cr-Fe-Ni-Ti HESA (HESA-3A) exhibited attractive blend of strength, resistance to coarsening, and resilience against oxidation • HESA-3A exhibited high volume fraction of γ′-phase (>64%) and elevated γ′-dissolution temperature (>1180 °C) • HESA-3A exhibited low coarsening rate of 2.8 * 10−28 m3/s at 800 °C. • Al-rich HESAs displayed an activation energy of ~220 kJ/mol for oxidation.