Metallography

Rough Preparation: Section & Mount

student doing rough sanding of metal sample to prepare for metallographic analysis

Various materials samples are cut (sectioned) and mounted in a hard polymeric materials (e.g., Bakelite, clear acrylic), then roughly ground to expose the area to be analyzed

Polish & Etch

student doing fine sanding of metal sample

Samples are finely polished to obtain a flat, mirror surface, and then selectively corroded (etched) to highlight grain boundaries and features of interest in the material being examined

Optical Microscopy & Image Analysis

instructor explaining how to use microscopes to visual details in the metal sample

Samples are examined under microscopes with specialized software to analyze various features, such as grain size and relative amounts of phases

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