—— Mr. David Chambers
—— Neil Renato
—— Fermin Lee
—— Dalius Skinulis
—— Sun Chull Kim
Metallography is the study of the microstructure of all types of metallic alloys. It can be more precisely defined as the scientific discipline of observing and determining the chemical and atomic structure and spatial distribution of the constituents, inclusions or phases in metallic alloys. By extension, these same principles can be applied to the characterization of any material.
Different techniques are used to reveal the microstructural features of metals. Most investigations are carried out with incident light microscopy in brightfield mode, but other less common contrasting techniques, like darkfield or differential interference contrast (DIC), and the use of color (tint) etching are expanding the scope of light microscopy for metallographic applications.
Many important macroscopic properties of metallic materials are highly sensitive to the microstructure. Critical mechanical properties, like tensile strength or elongation, as well as other thermal or electrical properties, are directly related to the microstructure. The understanding of the relationship between the microstructure and macroscopic properties plays a key role in the development and manufacture of materials and is the ultimate aim of metallography.
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