Cooling rate as a tool of tailoring structure of Fe-(9–33%)Ga alloys. (November 2019)

• Record Type: Journal Article
• Authors: Golovin, I.S.; Balagurov, A.M.; Bobrikov, I.A.; Sumnikov, S.V.; Mohamed, A.K.
• Is Part Of: Intermetallics. Volume 114(2019:Nov.)
• Publication Date: 2019-11
• Subjects: Functional alloys -- Annealing -- Metastable phases -- Ordering -- Phase transformation kinetics -- Neutron diffraction; Intermetallic compounds -- Metallography -- Periodicals; Metallic glasses -- Periodicals; Composés intermétalliques -- Métallographie -- Périodiques; 669.94
• DOI: 10.1016/j.intermet.2019.106610
• Languages: English
• ISSNs: 0966-9795

Abstract

Abstract: A huge difference between the structure and the properties of equilibrium and metastable Fe–Ga alloys along with an uncertain specification for their metastable state lead to urgent necessity of understanding the cooling rate role in the formation of the alloys structure. We studied structure of Fe-(9-33 at.%)Ga alloys after cooling with different cooling rates (furnace, air, water, as cast) and report structure and dependencies of lattice parameter for A2 and D03 phases on Ga content in Fe–Ga alloys. The first and second critical cooling rates are determined as the beginning and the end of formation of equilibrium L12 phase. Graphical abstract: Image 1 Highlights: High resolution neutron diffraction study of Fe-(15-33 at.%)Ga alloys. Effect of cooling rate on the alloy structures. First and second critical cooling rates are identified.