Grain Analysis
Grain Analysis - Related Videos
06:52
Nanocrystalline Alloys and Nano-grain Size Stability
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2023
Source: Sina Shahbazmohamadi and Peiman Shahbeigi-Roodposhti-Roodposhti, School of Engineering, University of Connecticut, Storrs, CT Alloys with grain size less than 100 nm are known as nanocrystaline alloys. Due to their enhanced physical and mechanical properties, there is an ever-increasing demand to employ them in various industries such as semiconductor, biosensors and aerospace. To improve the processing and application of nanocrystalline alloys, it is necessary to develop close to 100%...
09:51
Atom Probe Tomography Studies on the Cu(In,Ga)Se2 Grain Boundaries
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Cited by 29 •
2013
In this work, we describe the use of the atom-probe tomography technique for studying the grain boundaries of the absorber layer in a CIGS solar cell. A novel approach to prepare the atom probe tips containing the desired grain boundary with a known structure is also presented here.
09:13
Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction
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Cited by 8 •
2017
This paper provides a detailed method to characterize the microstructure of ultra-fine grained and nanocrystalline materials using a scanning electron microscope equipped with a standard electron backscatter diffraction system. Metal alloys and minerals presenting refined microstructures are analyzed using this technique, showing the diversity of its possible applications.
07:07
A High-Resolution, Single-Grain, In Vivo Pollen Hydration Bioassay for Arabidopsis thaliana
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2023
An improved method to measure pollen hydration profiles in Arabidopsis thaliana is described here. The new method offers higher resolution, is noninvasive, and is highly reproducible. The protocol represents a new tool for a finer dissection of the processes that regulate the early stages of pollination.
09:41
Isolation of Quartz Grains for Optically Stimulated Luminescence (OSL) Dating of Quaternary Sediments for Paleoenvironmental Research
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Cited by 4 •
2021
This protocol is for the isolation of quartz grains by size for luminescence dating of sediments. Outlined are physical cleansing and chemical digestions by soaking sequentially in H2O2, HCl, HF, and HCl again to isolate quartz grains. The quartz purity is quantified with microscopic assessment, Raman spectroscopy, and IR depletion ratio.
FAQs
Grain size measurements allow engineers to compare how different microstructures relate to strength, ductility, fatigue resistance, and corrosion behavior. A useful analysis considers size alongside grain shape and boundaries, because these features provide a more complete basis for interpreting performance. The resulting comparisons can guide material selection and reveal whether processing produced the intended structure.
Grain boundaries and crystallographic orientation show how neighboring crystalline regions are arranged within a material. Their distribution can help explain differences in mechanical and corrosion behavior between samples. Electron backscatter diffraction is especially useful because it maps orientation and texture, adding crystallographic information that ordinary images of grain shape and size cannot provide.
Cooling, deformation, and heat treatment can alter grain size, shape, boundaries, and orientation. Grain analysis therefore provides a way to compare the microstructures produced by different processing histories. Examining these changes helps engineers determine which conditions are associated with improved strength, ductility, fatigue resistance, or corrosion behavior, rather than evaluating performance without considering processing.
A specimen is typically prepared by polishing its surface and then etching it so that grain features become suitable for examination. Optical microscopy or electron microscopy can reveal grain size, shape, and boundaries. When orientation or texture must also be assessed, electron backscatter diffraction can extend the examination beyond conventional structural imaging.
Engineers use grain analysis when they need to compare materials, diagnose defects, or optimize manufacturing processes. It can be applied after different cooling, deformation, or heat-treatment conditions to identify microstructural differences associated with performance. This makes the technique useful for evaluating whether a production route creates a structure appropriate for the intended engineering service.
Grain analysis can connect observed microstructural features with changes in strength, ductility, fatigue resistance, and corrosion behavior. In practice, those relationships help investigators assess material differences, trace defects, and evaluate processing choices. The findings also support alloy design by identifying microstructures better suited to demanding applications and by clarifying how manufacturing influences final performance.