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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25 Jul 2008-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, the authors investigated the microstructure evolution in 1050 aluminum processed by equal channel angle pressing using Route BC and up to 16 passes, and found that the cell size gradually decreased with number of passes and attained an average value of about 0.6μm in the face plane (normal to the extrusion direction), and 0.85μm on the flow plane (parallel to the extrusion direction).
Abstract: Variation of mechanical properties and microstructure evolution in 1050 aluminum processed by equal channel angle pressing are investigated using Route BC and up to 16 passes. Micro hardness and compression testing were used to evaluate mechanical properties, whereas electron back scattered diffraction (EBSD) was used to document the variation of cell size and misorientation angle with number of passes. The hardness and yield strength exhibited an instant increase by a factor of about 2.75 and 2.96, respectively, compared to the annealed state, after only the first pass. It was found that the cell size gradually decreased with number of passes and attained an average value of about 0.6 μm in the face plane (normal to the extrusion direction), and 0.85 μm in the flow plane (parallel to the extrusion direction) after the sixteenth pass. The average misorientation angle evolved in both the face and flow planes ended up to about 27° and 26°, respectively.
92 citations
TL;DR: In this article, the capabilities of laser-based powder bed additive manufacturing (AM) to produce relatively large Fe-based bulk metallic glass specimens were examined and a low concentration of sparsely distributed nano-grain clusters was discovered using a high-resolution electron backscatter diffraction scan.
92 citations
25 Oct 2008-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, the evolution of dislocation structure in commercial purity aluminum is described by means of the excess dislocation density and by quantitative characterization of the cell structure as seen on a plane surface.
Abstract: A well-organized dislocation structure forms in many polycrystalline metals during plastic deformation. This structure is described qualitatively with no explanation of the quantitative characterization. In this work, the evolution of dislocation structure in commercial purity aluminum is described by means of the excess dislocation density and by quantitative characterization of the cell structure as seen on a plane surface. The measurements were performed on a pseudo-internal surface of a split specimen deformed by channel die deformation. The results show a clear dependence of cell structure formation on orientation of the crystallite with respect to the imposed deformation gradient with the largest excess dislocation density occurring in grains of { 011 }[1 2 2] orientation for plane strain deformation. Neighboring grain and non-local effects are shown to be of importance in the type of dislocation structures that evolve. © 2007 Elsevier B.V. All rights reserved.
92 citations
TL;DR: In this article, a fine-grained Mg-2.5-Y alloy was reported to exhibit tension/compression yield symmetry and reduced strength differential, in addition to well-balanced strength and ductility.
92 citations
TL;DR: In this article, the deformation activations have been calculated based on kinetics rate equation to investigate the hot deformation mechanism and microstructure evolution of Ti-6Al-2Zr-1Mo-1V titanium alloy.
92 citations