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The theory of transformations in metals and alloys
J.W. Christian,H. M. Otte +1 more
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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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Finite element modeling of the morphology of β to α phase transformation in Ti-6Al-4V alloy
TL;DR: In this paper, a mathematical model and computer programs were developed for numerical simulation of the processes of nucleation and growth of the α-phase Widmanstatten plates during the course of the β ⇒ α phase transformation in a Ti-6Al-4V alloy.
Journal ArticleDOI
Mechanisms of grain refinement by intensive shearing of AZ91 alloy melt
H. Men,B. Jiang,Zhongyun Fan +2 more
TL;DR: In this paper, the authors investigated the effect of intensive melt shearing on the grain refinement of Mg alloys and showed that the effect can be attributed to the naturally occurring MgO particles in the alloy melt as potent nucleation sites.
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Modelling of phase transformation kinetics in Ti alloys - Isothermal treatments
TL;DR: In this article, the formation of high temperature microstructures in β metastable titanium alloys is described based on the classical theory of nucleation, and on growth laws obtained by assuming that the processes are controlled by the diffusion of the alloying chemical species only.
Journal ArticleDOI
Magnetization reversal in nucleation controlled magnets. I. Theory
R. Ramesh,K. Srikrishna +1 more
TL;DR: In this article, a statistical model based on the weakest link statistics was developed to examine the magnetization reversal of domain-wall nucleation controlled permanent magnets such as sintered Fe•Nd•B and SmCo5.
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Excess nitrogen in the ferrite matrix of nitrided binary iron-based alloys
TL;DR: In this paper, a model was developed for quantitative description of the amount of excess nitrogen in Fe-M alloys, which can be attributed to an average lattice dilation induced by the volume misfit between nitrides and matrix.