Article on Steel Metallurgy
This might be of interest for those who like the more technical side of sword making:

OSAKA -- Hydrogen is now considered a precious clean energy source, but has long been thought a cause of metals becoming weaker and brittle. In 2010, researchers at Kyushu University and the National Institute of Advanced Industrial Science and Technology discovered that adding a supersaturated level of the colorless, odorless gas into a metal made it stronger. The result ran counter to conventional wisdom. However, has this finding led researchers around the world to change their view of hydrogen's impact on metals?
Article on Steel Metallurgy
Sword blades to be made from hydrogen-strengthened steel? Well, let's hope that one day blacksmiths produce swords from that kind of steel. ;)

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