Photomicrograph Database

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Artifact ID BCES 2020A/1982
Negative Number NS293
Magnification 400x
Etchant K2Cr2O7
Photo Date 7/3/2001


Alloy

high-tin bronze

Structure

Post-casting treatment?

Metallographic Description

Cast, either very slow cooled with some subsequent stress or annealed by accident. Irregular grains with occasional strain lines and twins. Much alpha+delta eutectoid between the grains. Another prill in this crucible was impure copper.


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