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This article is cited in 1 scientific paper (total in 1 paper)
Physical science of materials
Migration of $\gamma/\alpha$ interphase boundaries – the initial stage of reverse $\alpha\to\gamma$ transformation at slow heating of metastable allow Fe–32 at.% Ni
N. D. Zemtsova Institute of Metal Physics, Ural Division of the Russian Academy of Sciences, Ekaterinburg
Abstract:
During quenching of Fe–Ni metastable alloys with the invar composition from the austenite region, precipitating Fe$_3$Ni disperse particles are transformed into the $\alpha$-martensite structure upon cooling of the alloy in liquid nitrogen. Under slow heating, the inverse $\alpha\to\gamma$ transformation is initiated by the diffusion mechanism (and not the martensite mechanism as has been assumed until now) via migration of the $\gamma/\alpha$ phase boundaries, which is accompanied with coalescence of Fe$_3$Ni particles at these boundaries. The periodic distribution of lumped particles at the $\gamma$/$\alpha$ interfaces determines the periodic distribution of the mobility of various regions in phase boundaries. This leads to a change in the morphology of $\gamma/\alpha$ interfaces from the linear to serrate form in the course of diffusion-controlled evolution of the $\alpha\to\gamma$ transformation.
Keywords:
$\alpha\to\gamma$-transformation, martensitic plates, allows of Fe–Ni system.
Received: 14.12.2020 Revised: 15.01.2021 Accepted: 27.01.2021
Citation:
N. D. Zemtsova, “Migration of $\gamma/\alpha$ interphase boundaries – the initial stage of reverse $\alpha\to\gamma$ transformation at slow heating of metastable allow Fe–32 at.% Ni”, Zhurnal Tekhnicheskoi Fiziki, 91:7 (2021), 1139–1147; Tech. Phys., 66:9 (2021), 1049–1057
Linking options:
https://www.mathnet.ru/eng/jtf4975 https://www.mathnet.ru/eng/jtf/v91/i7/p1139
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