Photomicrograph Database

Artifact ID BT 0582/1396
Negative Number NS202
Magnification 100x
Etchant AH/HP, FeCl3
Photo Date 6/20/2000




Post-casting treatment

Metallographic Description

This specimen is shaped rather like a tack with a slightly curved shank. The shank is corroded in the middle, leaving two large islands of metal. The islands have large worked and annealed grains, with some grains showing strain marks but with the annealing twins remaining straight.

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