The upper photomicrograph was made at 50X.
The one below, at 200X.
Do you see anything unusual ?
Next is Specimen 5.
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Here we have a tin bronze which was cast and then annealed
at a low temperature. The upper photomicrograph was made at 50X. The one below, at 200X. Do you see anything unusual ? |
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The veined structure in the dendrite cores may be due to
precipitation of a tin-rich phase during the annealing step. Next is Specimen 5. |