Photomicrograph Database

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Artifact ID BC 2161A/0781
Negative Number NS138
Magnification 400x
Etchant FeCl3
Photo Date 3/21/2000

Photomicrograph Description

Closeup of the alpha and martensitic needles. High-tin.

Alloy

high-tin bronze

Structure

Hot-worked and quenched.

Metallographic Description

Beta-tin martensite, with occasional elongated blobs of alpha. The blobs all run lengthwise. The needles are very clear and cover almost the entire surface.




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