A light micrograph of a AA6XXX series
aluminium alloy showing that the structure
is fully annealed. The image was taken using
Polarised light after etching with barkers solution
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A light micrograph of a Ti-6Al-4V alloy showing the
acicular alpha phase. The image was taken using
normarski interference contrast and was etched using
a dilute HF and HNO3 solution.
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A light micrograph of a grey cast iron showing the
graphite structure. The image was taken using normarski
interference contrast after etching in Nital.
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