Journal ArticleDOI
Measuring and Interpreting the Structure of Grain‐Boundary Networks
TLDR
In this paper, the authors reviewed recent findings from two-and three-dimensional orientation mapping studies and confirmed a strong inverse correlation between the relative energies of grain boundaries and the frequency with which they occur in microstructures.Abstract:
Recently developed techniques to measure the structure of interfacial networks in three dimensions have the potential to revolutionize our ability to control the microstructures of polycrystals and interface-dominated materials properties. This paper reviews recent findings from two- and three-dimensional orientation mapping studies. The observations confirm a strong inverse correlation between the relative energies of grain boundaries and the frequency with which they occur in microstructures. The observations also show that during microstructure evolution, relatively higher energy grain boundaries are more likely to be shrinking while lower energy interfaces are more likely to be growing. These processes can lead to a steady-state distribution of grain boundaries that is influenced as much by the relative grain-boundary energies as by the exact processing conditions. Recent findings and emerging opportunities for grain-boundary characterization are reviewed in the final section of the paper.read more
Citations
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Journal ArticleDOI
Grain boundary energy anisotropy: a review
TL;DR: A review of grain boundary energy anisotropy can be found in this paper, with a brief discussion of the role of the grain boundary energies in nucleating discontinuous transitions in grain boundary structure and chemistry known as complexion transitions.
Journal ArticleDOI
Microstructural stability and mechanical behavior of FeNiMnCr high entropy alloy under ion irradiation
TL;DR: In this paper, a single phase (face centered cubic) concentrated solid solution alloy of composition 27%Fe-28%Ni-27%Mn-18%Cr was irradiated with 3 or 5.8 MeV Ni ions at temperatures ranging from room temperature to 700 Ã 0.03 to 10 displacements per atom (dpa).
Journal ArticleDOI
Grain boundary energies in body-centered cubic metals
Sutatch Ratanaphan,Sutatch Ratanaphan,David L. Olmsted,Vasily V. Bulatov,Elizabeth A. Holm,Anthony D. Rollett,Gregory S. Rohrer +6 more
TL;DR: In this paper, the authors employed the embedded atom method to compute the energies of 408 distinct grain boundaries in bcc Fe and Mo, including grain boundaries that have tilt, twist, and mixed character and coincidence site lattices ranging from Σ3 to Σ323.
Journal ArticleDOI
Grain boundary properties of elemental metals
Hui Zheng,Xiang-Guo Li,Richard Tran,Chi Chen,Matthew Horton,Donald Winston,Kristin A. Persson,Kristin A. Persson,Shyue Ping Ong +8 more
TL;DR: The grain boundary database (GBDB) as discussed by the authors is the largest database of DFT-computed grain boundary properties to date, including 327 GBs of 58 elemental metals, including 10 common twist or symmetric tilt GBs for body-centered cubic (bcc) and facecentered cubic systems and the Σ7 [0001] twist GB for hexagonal close-packed (hcp) systems.
Journal ArticleDOI
Improved representations of misorientation information for grain boundary science and engineering
TL;DR: In this article, a review summarizes recent developments that significantly advance our ability to represent a critical part of the grain boundary space: the misorientation information, which has recently enjoyed the development of an intuitive and rigorous framework for grain boundary representation.
References
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Journal ArticleDOI
Theory of Thermal Grooving
TL;DR: In this paper, the Gibbs-Thompson formula is used to describe the development of surface grooves at the grain boundaries of a heated polycrystal and the mechanisms of evaporation-condensation and surface diffusion are discussed with the use of the Gibbs•Thompson formula.
Journal ArticleDOI
Dislocation Models of Crystal Grain Boundaries
W. T. Read,William Shockley +1 more
TL;DR: In this article, the authors investigated the energies and motions of grain boundaries between two crystallites using the dislocation model of grain boundary and provided a quantitative expression for energy per unit area for small angles.
BookDOI
Electron Backscatter Diffraction in Materials Science
TL;DR: In this article, the authors present a framework for the automated backscatter diffraction in scanning and transmission Electron Microscopy (EBSD) using three-dimensional orientations.
Journal ArticleDOI
Orientation imaging: The emergence of a new microscopy
TL;DR: In this paper, a new microscopy called orientation imaging microscopy is described, which is based on precise measurements of local lattice orientation facilitated by backscattered Kikuchi diffraction.
Journal ArticleDOI
Three-dimensional X-ray structural microscopy with submicrometre resolution
TL;DR: A three-dimensional X-ray microscopy technique that uses polychromatic synchrotron X-rays to probe local crystal structure, orientation and strain tensors with submicrometre spatial resolution is described, applicable to single-crystal, polycrystalline, composite and functionally graded materials.