Topic
Electron backscatter diffraction
About: Electron backscatter diffraction is a research topic. Over the lifetime, 15184 publications have been published within this topic receiving 317847 citations. The topic is also known as: EBSD.
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TL;DR: In this paper, the authors present a simple, yet instructive and demonstrative treatment of the theory of ECC of lattice defects based on Bloch wave theory using a two-beam approach.
422 citations
TL;DR: In this paper, the authors report on the microstructure, texture and deformation mechanisms of a novel ductile lean duplex stainless steel (Fe 19.9Cr 0.42Ni 0.16N 4.35Si, wt.
405 citations
TL;DR: The structure of graphite consists of layers of linked hexagons of carbon atoms as discussed by the authors, and the layers are stacked in a ABAB sequence so that half the atoms in a layer are directly above and below carbon atoms in the adjoining layers.
Abstract: THE structure of graphite1 consists of layers of linked hexagons of carbon atoms. The layers are stacked in a ⋯ ABAB ⋯ sequence so that half the atoms in a layer are directly above and below carbon atoms in the adjoining layers, and half are directly above and below centres of the hexagons. The hexagonal unit cell contains atoms at the (0, 0, 1/4), (1/3, 2/3, 1/4), (0, 0,−1/4) and (2/3, 1/3,−1/4) positions. Modifications to this structure have been proposed by several workers. Lukesh2 reported diffraction patterns indicating a lower symmetry, and Pauling3 has proposed an orthorhombic structure in which the interconnected six-membered rings are distorted so that two-thirds of the bonds are longer. Pauling based his model on the high compressibility of the basal planes, and considerations of stacking bonds in the layered structure. Ergun4 suggested that data on pyrolitic graphite indicated an apparent quinoid structure in the graphite layers, but errors in his analysis have been reported5. X-ray and neutron diffraction studies of graphite were undertaken in our laboratory to study the details of the electron charge density and atomic motion in the graphite structure. The results of the neutron diffraction work show that all in plane carbon–carbon distances have the same value 1.422±0.001 A.
401 citations
TL;DR: In this article, the evolution of microstructure and the mechanical response of copper subjected to severe plastic deformation using equal channel angular pressing (ECAP) was investigated, and it was shown that the microstructures produced through adiabatic shear localization during high strain rate deformation and ECAP are very similar.
401 citations
TL;DR: In this article, the authors examined acicular ferrite, bainite, and martensite microstructures observed in three low-alloy steels and used electron backscattering diffraction (EBSD) to assess crystallographic features.
Abstract: This study deals with acicular ferrite, bainite, and martensite microstructures observed in three low alloy steels. Electron backscattering diffraction (EBSD) was used to assess crystallographic features of these microstructures. In each area studied by EBSD mapping, ‘crystallographic packets’ defined as clusters of points sharing the same crystallographic orientation were compared with ‘morphological packets’ observed in the corresponding light micrograph. Microtexture studies suggested that acicular ferrite and upper bainite grow with Nishiyama– Wassermann relationships with the parent austenite phase, whereas lower bainite and martensite consist of highly intricate packets having Kurdjumov–Sachs relationships with the parent phase. In all cases three highly misoriented texture components were found within each former austenite grain. Electron backscattering diffraction also gave information about the cleavage and intergranular reverse temper embrittlement fracture mechanisms of these steels. In...
399 citations