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File:Katana - showing alternating layers.jpg

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Summary

Description
English: 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.[1]

References

  1. "A History of Metallography" by Cyril Smith
Date
Source Own work (Original text: I created this work entirely by myself.)
Author Zaereth (talk)

Licensing

Public domain This work has been released into the public domain by its author, Zaereth at English Wikipedia. This applies worldwide.
In some countries this may not be legally possible; if so:
Zaereth grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

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Transferred from en.wikipedia to Commons by Rockfang.

The original description page was here. All following user names refer to en.wikipedia.
  • 2008-10-03 00:51 Zaereth 1280×960× (481825 bytes) {{Information |Description=Katana - Showing alternating layers of hardenability |Source=I created this work entirely by myself. |Date=12/13/2007 |Author=~~~ |other_versions= }}

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13 December 2007

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Date/TimeThumbnailDimensionsUserComment
current20:45, 28 March 2016Thumbnail for version as of 20:45, 28 March 20161,716 × 1,257 (273 KB)ZaerethCut excess space, for better thumb view
06:17, 26 April 2009Thumbnail for version as of 06:17, 26 April 20091,280 × 960 (471 KB)Rockfang{{Information |Description={{en|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

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