نتایج جستجو برای: آنالیز ebsd
تعداد نتایج: 42641 فیلتر نتایج به سال:
جوشکاری اصطکاکی اغتشاشی لب به لب ورق های فولادی با ضخامت های کمتر از یک میلیمتر به عنوان یکی از چالش های مهم سال های اخیر بوده است. در این پژوهش جوشکاری اصطکاکی اغتشاشی لب به لب فولاد if با ضخامت 0.7 میلیمتر به صورت تجربی مورد مطالعه قرار می گیرد. بدین منظور اثرات سرعت های دورانی و پیشروی ابزار بر استحکام و سختی اتصالات جوشکاری شده بررسی می شود. استحکام مکانیکی اتصالات توسط تست کشش تک محوری برآ...
Currently, EBSD is used routinely for phase and crystallites orientation mapping and studying the grain boundary of metallic and alloy samples [1]; this is partially due to the well-suited nature of these sample types for EBSD as they show no charging effect and can be polished smoothly to provide a good diffraction path from specimen surface back to EBSD camera. On the other hand, though not g...
The spatial resolution of electron diffraction within the scanning electron microscope (SEM) has progressed from channelling methods capable of measuring crystallographic characteristics from 10 μm regions to electron backscatter diffraction (EBSD) methods capable of measuring 120 nm particles. Here, we report a new form of low-energy transmission Kikuchi diffraction, performed in the SEM. Tran...
Electron backscatter diffraction (EBSD) is becoming a widely used technique to determine crystallographic orientation in biogenic carbonates. Despite this use, there is little information available on preparation for the analysis of biogenic carbonates. EBSD data are compared for biogenic aragonite and calcite in the common blue mussel, Mytilus edulis, using different types of resin and thickne...
Electron Back-Scatter Diffraction (EBSD) is a powerful technique that captures electron diffraction patterns from crystals, constituents of material. Captured patterns can then be used to determine grain morphology, crystallographic orientation and chemistry of present phases, which provide complete characterization of microstructure and strong correlation to both properties and performance of ...
Electron backscatter diffraction (EBSD) has evolved into a well-established tool for microstructural characterization by providing quantitative information on crystallographic orientation and phase content and distribution. The rapid acceptance of EBSD as an analytical technique has been driven, in part, by the highly informative contrasts used to create different micrographs which effectively ...
The present work gives a brief overview of the current status of the electron backscatter diffraction (EBSD) technique. The fundamentals of the production of Kikuchi patterns are first discussed. An experimental set-up for the automated obtaining and processing EBSD patterns in scanning electron microscopy (SEM) is subsequently described and the relevant calibration and automatic Kikuchi patter...
Electron backscattered diffraction (EBSD) has replaced electron channeling and selected area electron channeling patterns (SACPs) for many scanning electron microscopy (SEM) based crystallographic studies, due to the rapid collection rates and high spatial resolution of EBSD. Nevertheless, a number of SEM techniques, for example electron channeling contrast imaging (ECCI), are better served usi...
جوشکاری همزن اصطکاکی (fsw)، بسیاری از مشکلات و محدودیتهای ناشی از ذوب و انجماد فلز جوش را ندارد و با کنترل متغیرهای آن می توان به ریزساختار و خواص مکانیکی مناسب در موضع اتصال رسید. پژوهش حاضر به بررسی نحوه پیدایش ریزساختار در متغیرهای مختلف fsw و تأثیر آن بر خواص مکانیکی فولاد زنگ نزن دوپلکس 2205 saf می پردازد. یک ابزار ساده از جنس wc-co برای فرآوری ورقهای mm 2 در سرعتهای چرخشی 200، 400، 600 و ...
By simply crushing mineral grains, suspending the powder in a liquid, and dispersing the suspension on a suitable substrate, it is possible to collect adequate compositional and structural information to identify an unknown phase using a scanning electron microscope (SEM) equipped with an energydispersive X-ray spectrometer (EDS) and an electron backscatter diffraction system (EBSD). This techn...
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