Journal ArticleDOI
Dislocation mobility and the mechanical response of b.c.c. single crystals: A mesoscopic approach
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TLDR
In this article, a mesoscopic simulation of dislocations and plasticity in b.c. crystals at low temperatures is developed and applied to the case of Ta, where the thermally activated nucleation of double kinks is taken as controlling the mobility of screw dislocation.About:
This article is published in Acta Materialia.The article was published on 1998-05-22. It has received 194 citations till now. The article focuses on the topics: Dislocation creep & Dislocation.read more
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Effect of nanocrystalline and ultrafine grain sizes on the strain rate sensitivity and activation volume: fcc versus bcc metals
TL;DR: In this paper, the authors present experimental results from their in-house tests on UFG Cu, Fe and Ta, along with those available in literature, regarding the behavior of SRS and activation volume of UFG/nc metals with face-centered cubic (fcc) and bodycentered cubic structures.
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Texture and anisotropy
Hans-Rudolf Wenk,P. Van Houtte +1 more
TL;DR: In this paper, a review of texture analysis at non-ambient conditions is presented, with emphasis on technologically important systems and in rocks that contribute to anisotropy in the earth.
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Effects of nanocrystalline and ultrafine grain sizes on constitutive behavior and shear bands in iron
D. Jia,K.T. Ramesh,Evan Ma +2 more
TL;DR: In this paper, the authors studied the mechanical behavior of consolidated iron with average grain sizes from tens of nanometers to tens of microns under uniaxial compression over a wide range of strain rates.
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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
Simulation of dislocations on the mesoscopic scale. I. Methods and examples
TL;DR: In this paper, the Peach-Koehler theory is implemented to simulate the motion of arbitrarily configured interacting dislocations, located on arbitrary glide planes and having any allowed Burgers vector.
References
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Book
Theory of Dislocations
John Price Hirth,Jens Lothe +1 more
TL;DR: Dislocations in Isotropic Continua: Effects of Crystal Structure on Dislocations and Dislocation-Point-Defect Interactions at Finite temperatures.
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Dislocation Microstructures and Plastic Flow: A 3D Simulation
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Some surprising features of the plastic deformation of body-centered cubic metals and alloys
TL;DR: In this article, a review of recent studies of low-temperature deformation behavior is presented, including slip asymmetry, failure of the Schmid law of critical resolved shear stress, anomalous slip in very pure metals and alloys, solution softening, and the ductile-brittle transition.
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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.