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 article, the optimal parameters for preparing nanofluid in a submerged arc nanoparticle synthesis system (SANSS) using a copper electrode were found, and a suspended copper oxide nanoparticle was obtained at the current of 8.5-10 A, voltage of 220 V, pulse duration of 12 μs, and dielectric liquid temperature of 2°C.
Abstract: The optimal parameters are found for preparing nanofluid in our submerged arc nanoparticle synthesis system (SANSS) using a copper electrode. A suspended copper oxide nanofluid is thus produced at the current of 8.5–10 A, voltage of 220 V, pulse duration of 12 μs, and dielectric liquid temperature of 2°C. The CuO nanoparticle are characterized by transmission electron microscopy (TEM), field emission scanning electron microscope (FESEM), X-ray diffraction (XRD), electron diffraction pattern (SAD) and electron spectroscopy for chemical analysis (ESCA). The equality volume spherical diameter of the obtained copper oxide particle is 49.1 nm, regular shape and narrow size distribution.
132 citations
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25 Jan 2008-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, a commercially pure Al was processed by equal channel angular pressing (ECAP) up to 8 passes using route B C. For ECAP processing a proper die set was designed and constructed.
Abstract: In the present paper commercially pure Al was processed by equal channel angular pressing (ECAP) up to 8 passes using route B C . For ECAP processing a proper die set was designed and constructed. Transmission electron microscope (TEM) and electron backscatter diffraction (EBSD) were used to evaluate the microstructure of the pressed materials. Mechanical properties and the deformation behavior of the ECAP processed material were investigated by the hardness and compression tests. The significant increase in hardness and yield stress after ECAP was discussed by two strengthening mechanisms. Based on these mechanisms, variations of the hardness and yield stress as a function of the pass numbers were related to the calculated dislocation densities and the average boundary spacing. Also it was suggested that the absorption of the dislocations into grain boundaries would be an effective recovery process for the absence of the strain hardening.
132 citations
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TL;DR: Transmission Kikuchi diffraction (TKD) has received significant interest for the characterisation of nanocrystalline materials and nanostructures as discussed by the authors, including forescatter detector imaging and ongoing parameter optimisation.
Abstract: Transmission Kikuchi diffraction (TKD), also known as transmission electron backscatter diffraction (t-EBSD), has received significant interest for the characterisation of nanocrystalline materials and nanostructures. In this paper, we will review the development of TKD, including forescatter detector imaging and ongoing parameter optimisation, as well as some of the current applications of the technique. A comparison to other microanalysis techniques is also included, highlighting their relative strengths and weaknesses and their complementarity with TKD. Finally, potential applications of the technique and possible future developments are discussed.
131 citations
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TL;DR: In this article, a near-β titanium alloy was processed by selective laser melting (SLM), which is one of the most popular additive manufacturing methods for high strength and low density materials.
131 citations
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TL;DR: In this article, the additive production technology selective laser melting (SLM) is used for direct fabrication of metal-based functional components, and the process parameters (e.g., laser power, scan speed, layer orientation, preheating, etc.) on the microstructure (electron backscatter diffraction and texture) and resultant mechanical properties (hardness, tensile strength, yield strength, and breaking elongation) for aluminum die-cast alloys) are investigated.
Abstract: The additive production technology selective laser melting (SLM) is used for direct fabrication of metal-based functional components. SLM is one of the powder-bed based AM technologies. SLM is well established in serial production for dental restoration as well as for tooling. Main concern for industrial application remains the scope of processible materials and resulting mechanical properties. Toward processing of aluminum alloys commercially available systems exist with comparability in terms of applied process parameters and resulting mechanical properties remaining a challenge. Often no data are available concerning process parameters and mechanical properties. This holds especially for high-power SLM systems with increased build rates as a result of extended laser powers of up to 1 kW. Especially when processing aluminum alloys, the solidification conditions significantly affect the resulting microstructure in terms of size of dendrites and grains. Consequently, the present paper systematically investigates and correlates the process parameters (e.g., laser power, scan speed, layer orientation, preheating, etc.) on the microstructure (electron backscatter diffraction and texture) and resultant mechanical properties (hardness, tensile strength, yield strength, and breaking elongation) for aluminum die-cast alloys. At this, underlying phenomena for typically observed anisotropy of mechanical properties in dependence on layer orientation are further specified.
131 citations