Interplay between D019, L12 and D03 phases in Fe3Ga-type alloy

• Published in: Journal of alloys and compounds Vol. 1000; p. 175150
• Main Authors: Golovin, I.S., Palacheva, V.V., Cheverikin, V.V., Zanaeva, E.N., Uyi, D.O., Shcherbakov, A.A., Mouas, M., Gasser, F., Gasser, J.-G., Sumnikov, S.V., Balagurov, A.M.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 25.09.2024; Elsevier
• Subjects: ATP; EBSD; Fe3Ga alloy; Kinetics of the D03 →→ L12 → D019 transitions; Neutron diffraction; Physics; VSM; Fe3Ga alloy; Kinetics of the D03 →→ L12 → D019 transitions; VSM; Neutron diffraction; ATP; EBSD; Kinetics of the D03 →→ L12 → D019 transitions
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2024.175150

Analysis of the first-order transition between D03 and two close-packed phases (L12, D019) in Fe3Ga-type alloy (26.9 %Ga), is carried out at different cooling rates from the range of equilibrium D019 phase and at different cooling rates from the range of equilibrium A2 phase. The structure was controlled by neutron diffraction, SEM-EBSD and additionally characterized using VSM and ATP tests. The obtained results clarify kinetics of D019 phase growth and transition to low temperature equilibrium L12 phase. We demonstrated that D019 phase is ferromagnetic at room temperature with very low saturation magnetostriction. •First-order transitions between D03 and close-packed phases L12, D019 in Fe3Ga-type alloy.•Structure was controlled by neutron diffraction, SEM-EBSD, VSM.•The D019 phase is ferromagnetic at RT with nearly zero saturation magnetostriction.•At heating, D019 phase is more stable with respect to transition to L12 as compared with D03 phase.