Abstract
Structure of a metastable austenitic invar alloy Fe-32% Ni preliminarily quenched for martensite and subjected to α → γ transformation using slow heating to various temperatures (430–500°C) with the formation of variously oriented nanocrystalline lamellar austenite, which was subjected to an additional annealing at 280°C (below the calculated temperature of ordering of the γ phase), has been studied electron-microscopically. An electron diffraction analysis revealed the presence of an L10 superstructure in the disperse nickel-enriched nanocrystalline γ phase both after annealing at 280°C and in the unannealed alloy immediately after α → γ transformation upon slow heating to 430°C.
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Original Russian Text © I.G. Kabanova, V.V. Sagaradze, N.V. Kataeva, 2011, published in Fizika Metallov i Metallovedenie, 2011, Vol. 112, No. 3, pp. 285–294.
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Kabanova, I.G., Sagaradze, V.V. & Kataeva, N.V. Formation of an L10 superstructure in austenite upon the α → γ transformation in the invar alloy Fe-32% Ni. Phys. Metals Metallogr. 112, 267–276 (2011). https://doi.org/10.1134/S0031918X11030197
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DOI: https://doi.org/10.1134/S0031918X11030197