Open AccessBook
The theory of transformations in metals and alloys
J.W. Christian,H. M. Otte +1 more
TLDR
In this paper, the authors present a general introduction to the theory of transformation kinetics of real metals, including the formation and evolution of martensitic transformations, as well as a theory of dislocations.Abstract:
Part I General introduction. Formal geometry of crystal lattices. The theory of reaction rates. The thermodynamics of irreversable processes. The structure of real metals. Solids solutions. The theory of dislocations. Polycrystalline aggregates. Diffusion in the solid state. The classical theory of nucleation. Theory of thermally activated growth. Formal theory of transformation kinetics. Part II Growth from the vapour phase. Solidification and melting. Polymorphic Changes. Precipitation from supersaturated solid solution. Eutectoidal transformations. Order-disorder transformations. Recovery recrystalisation and grain growth. Deformation twinning. Characteristics of martensic transformations. Crystallography of martensitic transformations. Kinetics of martensitic transformations. Rapid solidification. Bainite steels. Shape memory alloys.read more
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Determination and interpretation of isothermal and non-isothermal transformation kinetics; the effective activation energies in terms of nucleation and growth
TL;DR: In this paper, a general model for the kinetics of solid state phase transformations has been discussed, which is valid for both isothermal and non-isothermal transformations, and can be simplified such that it reduces to so-called Johnson-Mehl-Avrami (JMA) kinetics.
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Nanocrystal development during primary crystallization of amorphous alloys
TL;DR: In this article, a kinetics analysis has been developed to account for nanocrystal growth with diffusion field impingement and unequal component diffusivities in multicomponent amorphous alloys.
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Micro-Raman study of the m-MoO2 to α-MoO3 transformation induced by cw-laser irradiation
Miguel A. Camacho-López,L. Escobar-Alarcón,Michel Picquart,R. Arroyo,G. Córdoba,Emmanuel Haro-Poniatowski +5 more
TL;DR: In this paper, the authors report the monoclinic-MoO2 to orthorhombic -MoO3 transformation induced by continuous wave-laser irradiation.
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Atomic mechanisms of precipitate plate growth
TL;DR: In this article, high-resolution transmission electron microscopy, image simulation, energy-dispersive X-ray spectroscopy and convergent-beam electron diffraction are used to characterize the atomic structure, chemistry and growth mechanisms of γ' plate-shaped precipitates in an Al-4·2 at.c.% Ag alloy aged for 30min at 350°C.
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Origin of rubber-like behaviour in metal alloys
Xiaobing Ren,Kazuhiro Otsuka +1 more
TL;DR: In this paper, it was shown that the deformation of ordered alloys is not due to a change in the degree of long-range order, but is instead due to an atomic rearrangement within the same sublattice of the imperfectly ordered alloy during martensite ageing.