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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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Atomic mechanisms of precipitate plate growth in the AlAg system—I. Conventional transmission electron microscopy
TL;DR: In this article, the detailed interfacial structure of γ′ precipitates in an Al-15 wt%Ag alloy has been studied by conventional transmission electron microscopy, and contrast analyses indicate that there is a strong tendency for single 1 6 〈112〉 Shockley partial dislocations on the precipitate faces to interact, forming multiple unit ledges which display the contrast behavior of 1 2 ǫ-110-dislocations.
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Low-temperature degradation in zirconia with a porous surface
TL;DR: It is shown that specific conditions of processing to generate the porous layer at the surface can lead to an accelerated tetragonal-monoclinic transformation of the porous layers in the presence of water, and low-temperature degradation resistance of such porous surfaces should be carefully followed and controlled in order to avoid critical problems in the future.
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The dendritic growth of γ' precipitates and grain
TL;DR: In this paper, the growth pattern of γ precipitates in the grains and at the grain boundaries has been investigated in a Ni-24Co-4Al-4Ti-5Cr-5Mo (weight percent) alloy of very small lattice misfit between the precipitate and the matrix phases under varying heat-treatment conditions.
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Cyclic torsional loading of pseudoelastic NiTi shape memory alloys: Damping and fatigue failure
TL;DR: In this article, the authors investigated the mechanical response of pseudoelastic NiTi shape memory alloys to cyclic torsional loading, and reported the corresponding fatigue data and provided a microstructural interpretation of fatigue failure.
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Surface relief and the mechanism of a phase transformation
TL;DR: In this paper, the surface relief in a diffusional fcc-hcp transformation and its relation to ledge growth is examined. And the same mechanism is applied to increasingly complex cases, such as the relation to structural ledges, fccbcc transformations and finally a general martensite interface.