Journal ArticleDOI
Basal slip in zirconium
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TLDR
In this article, it was shown that the mechanism of basal slip involves recombination of extended dislocations lying on the prism planes followed by cross slip, and the critical resolved shear stress for basal slip was found to be temperature and strain rate dependent.About:
This article is published in Acta Metallurgica.The article was published on 1973-01-01. It has received 158 citations till now. The article focuses on the topics: Slip (materials science) & Frank-Read Source.read more
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A model for texture development dominated by deformation twinning: Application to zirconium alloys
TL;DR: In this paper, a volume fraction transfer (VFT) scheme is proposed for grain reorientation due to twinning, which is also applied to the slip modes of Zr and Zr alloys, and a comparison of various predicted and experimental textures leads to the conclusion that twinning must be controlling texture development.
Journal ArticleDOI
A dislocation-based constitutive law for pure Zr including temperature effects
TL;DR: In this article, a single crystal constitutive law for multiple slip and twinning modes in single phase hcp materials is developed, where a dislocation population is evolved explicitly as a function of temperature and strain rate through thermally-activated recovery and debris formation and the associated hardening includes stage IV.
Journal ArticleDOI
Structural evolutions of metallic materials processed by severe plastic deformation
TL;DR: In this paper, a comprehensive review on important micro-structural evolutions and major microstructural features induced by SPD processing in single-phase metallic materials with face-centered cubic structures, body-centered cylindrical structures, and hexagonal close-packed structures, as well as in multi-phase alloys is provided.
Journal ArticleDOI
Distribution Characteristics of In-Grain Misorientation Axes in Cold-Rolled Commercially Pure Titanium and Their Correlation with Active Slip Modes
TL;DR: In this article, the distribution characteristics of in-grain misorientation axes (IGMA) in cold-rolled pure titanium were investigated using electron backscatter diffraction (EBSD).
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Strain rate and temperature effects on the selection of primary and secondary slip and twinning systems in HCP Zr
TL;DR: In this article, the authors investigated the temperature and rate dependence of slip, twinning, and secondary twinning in high-purity hexagonal close packed α-Zr over a wide range of temperatures and strain rates.
References
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Journal ArticleDOI
Thermally activated glide in face-centred cubic metals and its application to the theory of strain hardening
TL;DR: In this article, the influence of temperature and strain rate on the flow stress of polycrystalline aluminium, and single crystals of aluminium, copper and silver was studied, and the results indicated that the reversible change of flow stress (after correction for variation in elastic modulus in experiments involving temperature change) results from the thermally activated surmounting of barriers by glide dislocations.
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Plastic deformation of nickel single crystals at low temperatures
TL;DR: In this article, the work-hardening parameters obtained are discussed in terms of dislocation theory that has been developed mainly on the basis of data on Al and Cu, and the advantages of the temperature change method for an investigation of the flow stress are pointed out following a theoretical analysis of the relation between this method and that of the work hardening parameters.
Journal ArticleDOI
Plastic deformation of zirconium single crystals
A Akhtar,A Teghtsoonian +1 more
TL;DR: In this paper, the deformation modes operative at various crystal orientations and the effect of purity, temperature, orientation and strain rate, on the work hardening parameters have been investigated.