Photomicrograph Database

Artifact ID BT 0509/1083
Negative Number NS199
Magnification 200x
Etchant AH/HP, FeCl3
Photo Date 6/13/2000




Post-casting treatment

Metallographic Description

Fine equiaxed grains, with numerous strain lines and annealing twins. There are many strain cracks into the interior, and the grains are considerably smaller on the outer edges than in the interior, indicating some work on the edge. But the grains are undistorted, so the final work was not extensive. Worked, annealed, worked. This cycle may have been repeated several times.

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