Journal ArticleDOI
Quantitative texture studies of the superplastically deformed AlCu eutectic alloy
Reads0
Chats0
TLDR
In this article, the texture changes can be interpreted in terms of grain boundary sliding, dislocation motion and diffusion creep in the Al-33 wt% Cu eectic alloy.About:
This article is published in Acta Metallurgica.The article was published on 1974-05-01. It has received 55 citations till now. The article focuses on the topics: Grain Boundary Sliding & Diffusion creep.read more
Citations
More filters
Journal ArticleDOI
Grain boundary sliding as the origin of superplasticity in commercially pure aluminium
TL;DR: In this article, the steady state creep of pure and commercial aluminium was studied at different working temperatures in the range 340-475 °C under a constant stress of 1.86 kgf mm−2.
Book ChapterDOI
Physical Processes During Creep
TL;DR: In polycrystals subjected to low stresses at high temperatures the individual grains move relative to one another rather like grains of flowing sand This is the phenomenon known as superplasticity and it is a condition of high ductility and low strength If the stress is increased, dislocations appear in increasing numbers and their movements give rise to permanent deformation of each grain Now the deformation is more akin to the shear of a pack of playing cards as discussed by the authors.
Deformation Banding and Grain Refinement in FCC Materials
TL;DR: In this article, grain maps constructed from orientation data and analysis of transmission data illustrate the presence of fine grains and deformation bands in which the lattice orientation contains symmetric variants of a texture component.
Journal ArticleDOI
Optimization of high-temperature compression of as-cast Al–Cu eutectic alloy
TL;DR: In this paper, the superplastic characteristics achieved after compressive predeformation at high temperature of as-cast Al-Cu eutectic alloy have been studied as a function of the pre-formation speed Vp.
Journal ArticleDOI
Texture Studies of Superplastically Deformed Electrodeposited Nanocrystalline Ni and Ni-P Alloy
TL;DR: In this article, the nano Ni-P alloy exhibited significant strain hardening in flow behavior and lower superplastic elongations at relatively low strain rates, although the grain size was finer at test temperatures with limited grain growth.
References
More filters
Journal ArticleDOI
A Model for Boundary Diffusion Controlled Creep in Polycrystalline Materials
TL;DR: In this article, the authors discussed the mechanism of creep in polycrystalline alumina based on the differences between the lattice and boundary diffusion models and showed that the boundary diffusion model is more stable than lattice diffusion model, while the grain size dependence and the numerical constant are greater.
Journal ArticleDOI
The relation between polycrystal deformation and single-crystal deformation
TL;DR: In this paper, a phenomenological description of crystallographic slip and pencil glide in single crystals is outlined, with emphasis on the behavior under prescribed strains Theoretical relations are established between these single-crystal properties and the behavior of quasi-homogeneous, quasi-isotropic polycrystals deforming uniformly on a macroscopic scale, at subdiffusive temperatures.
Journal ArticleDOI
Description of Crystallite Orientation in Polycrystalline Materials. III. General Solution to Pole Figure Inversion
TL;DR: In this article, the orientation distribution of crystallites in anisotropic polycrystalline samples can be derived from a set of plane-normal distributions obtained by x-ray diffraction measurements.
Journal ArticleDOI
Growth of grain boundary precipitates in Al-4% Cu by interfacial diffusion
H.B. Aaron,H.I Aaronson +1 more
TL;DR: In this article, the grain boundary allotriomorphs were measured in the temperature range 200°-325°C in an Al-4 % Cu alloy, and it was found that both the lengthening and thickening rates were orders of magnitude too rapid to be controlled by the volume diffusion of Cu toward the growing allotrimorphs.