Journal ArticleDOI
Lengthscale-dependent, elastically anisotropic, physically-based hcp crystal plasticity: Application to cold-dwell fatigue in Ti alloys
TLDR
In this paper, a crystal plasticity model for hcp materials is presented which is based on dislocation glide and pinning, and it is shown that the primary effect of elastic anisotropy during subsequent plastic flow is to increase local, grain-level, accumulated slip.About:
This article is published in International Journal of Plasticity.The article was published on 2007-06-01. It has received 400 citations till now. The article focuses on the topics: Slip (materials science) & Grain boundary.read more
Citations
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Journal ArticleDOI
The physics of fatigue crack initiation
TL;DR: In this paper, the authors focus on experimental observations of strain localization and the theory and numerical analysis of both slip irreversibilities and low energy configuration defect structures, which are the early signs of damage during cyclic loading.
Journal ArticleDOI
Microstructure-sensitive computational modeling of fatigue crack formation
TL;DR: In this article, microstructure-sensitive fatigue modeling is proposed for Ni-base superalloys, gear steels, and α-β Ti alloys, with focus on the individual grain scale as the minimum length scale of heterogeneity.
Journal ArticleDOI
The role of heterogeneous deformation on damage nucleation at grain boundaries in single phase metals
Thomas R. Bieler,Thomas R. Bieler,Philip Eisenlohr,Franz Roters,Deepak Kumar,D. E. Mason,Martin A. Crimp,Dierk Raabe +7 more
TL;DR: In this paper, a crystal plasticity-finite element (CP-FEM) based model of an extensively characterized microstructural region has been used to determine if the stress-strain history provides any additional insights about the relationship between shear and damage nucleation.
Journal ArticleDOI
Anisotropy in the plastic flow properties of single-crystal α titanium determined from micro-cantilever beams
Jicheng Gong,Angus J. Wilkinson +1 more
TL;DR: In this article, single-crystal micro-cantilever beams were manufactured from a polycrystalline commercially pure Ti sample using a focused ion beam and a nano-indenter was then used to conduct micro-bending tests.
Journal ArticleDOI
Grain boundaries and interfaces in slip transfer
TL;DR: In this article, the effect of slip transfer on heterogeneous deformation of polycrystals has been a topic of recurring interest, as this process can either lead to the nucleation of damage, or prevent nucleations of damage.
References
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Journal ArticleDOI
The deformation of plastically non-homogeneous materials
TL;DR: The geometrically necessary dislocations as discussed by the authors were introduced to distinguish them from the statistically storages in pure crystals during straining and are responsible for the normal 3-stage hardening.
Journal ArticleDOI
Strain gradient plasticity: Theory and experiment
TL;DR: In this paper, a deformation theory of plasticity is introduced to represent in a phenomenological manner the relative roles of strain hardening and strain gradient hardening, which is a non-linear generalization of Cosserat couple stress theory.
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Some geometrical relations in dislocated crystals
TL;DR: In this article, the authors show that the trajectories of the deformed glide planes (the c-axes in hexagonal metals) are straight lines, and that the lattice becomes curved when a single crystal deforms by double gliding.
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Particle reinforced aluminium and magnesium matrix composites
TL;DR: In this article, the current status of particle reinforced metal matrix composites is reviewed and the different types of reinforcement being used, together with the alternative processing methods, are discussed, and different factors have to be taken into consideration to produce a high quality billet.