Photomicrograph Database

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Artifact ID BT 0514/1108
Negative Number NS200
Magnification 100x
Etchant AH/HP, FeCl3
Photo Date 6/16/2000


Alloy

bronze.

Structure

As-cast.

Metallographic Description

The sample is dendritic, with only a small amount of coring visible. The grain boundaries are very clear, and the grains are large. A small amount of alpha+delta eutectoid has survived corrosion. There are many blue-gray inclusions, and at one end, large gas and shrinkage pores. At the very end the artifact shows a deep v-shaped cut which penetrates about 4 mm into the artifact. The sharp, even sides of the cut suggest that it was deliberately produced.


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