Photomicrograph Database

Artifact ID DK 0149/0329
Negative Number NS230
Magnification 400x
Etchant AH/HP, FeCl3
Photo Date 7/7/2000


high-tin bronze


Hot-worked and quenched.

Metallographic Description

A beta-tin martensite. A very fine structure: the alpha are small and the needles hard to resolve. There is a mosaic pattern of uneven grains across the sample. A dark, somewhat feathery (Sn-rich?) phase outlines both the alpha and the grain boundaries.

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