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| View Original: | Katana - showing alternating layers.jpg (1716x1257) | |||
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| Keywords: Katana - showing alternating layers.jpg Katana - Showing alternating layers of hardenability In this photo lighter colored layers have a higher carbon content than the darker layers In reality which layer is lighter or darker depends on the angle it is viewed from compared to the lighting Visible on the right hand side of the photo is the nioi which can be seen as a bright thin line about a millimeter or two wide surrounding the hardened edge of the yakiba The nioi is made up of niye which are single martinsite crystals surrounded by pearlite The streaks of niye that whisp away from the hardened edge result from the forged in layeres of different steel <ref> A History of Metallography by Cyril Smith</ref><br/> References <references/> own original text I created this work entirely by myself 1 2007-12-13 Zaereth talk Zaereth original upload log en wikipedia Rockfang page en wikipedia Katana_-_showing_alternating_layers JPG 2008-10-03 00 51 Zaereth 1280×960× 481825 bytes Katana - Showing alternating layers of hardenability I created this work entirely by myself 12/13/2007 ~~~ Hamon Hada nihonto | ||||
