MetE 206 Exp3 - Met E 206 Material Laboratory Experiment...

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Met E 206 Material Laboratory Experiment III Microstructure of Materials Lab Assistant: Derya Erdem Tahir Mahmut Beydola 1394014
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Metallography is the branch of physical metallurgy that observes microstructures of metallic materials. Microstructures of materials show their mechanical properties, chemical composition and processes were used on that material. Microstructures of materials change with chemical composition, heating temperature, cooling rate, hot or cold working on that material. Metallographic specimen is prepared following order: a) Sampling and sectioning: that specimen should represent the original material. b) Mounting: the specimen should be mounted for easy handling. c) Grinding: flat surface needed for clear observation. For this purpose emery papers are used for coarsest to finest. d) Polishing: this is last part for giving the specimen mirror like surface. e) Etching: the grain boundaries’ energies are higher so it reacts firstly in a dilute acid solution so the image we observed shows the grain boundaries dark. Specimens One furnace cooled 1020steel. Four 1060 steel with furnace cooled, air cooled, oil quenched, water quenched. One brass specimen. One cold worked steel. Specimen No. Steel Grade Processing Route 1 AISI 1060 Furnace Colling 2 AISI 1060 Air Cooling 3 AISI 1060 Water Quenching 4 AISI 1060 Oil Quenching
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MetE 206 Exp3 - Met E 206 Material Laboratory Experiment...

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