Characterization of grain microstructure of materials (metal, ceramics) using optical microscope.

1. Grain boundary has a dimension of:
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2. Fine grain size usually result:
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3. During fatigue,
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4. Pearlite structure of steel has which type of grains:
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5. Cast structure showing constitutional supercooling typically will result which grain-structure:
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6. Martensitic grain structure is typically exhibits which grain structure?
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