Orbis non sufficit
Sunday, April 16, 2006
Interesting
"Martensite has a lower density than ferrite, so that the transformation between phases often results in a relative change of volume: this can be seen vividly in the Japanese Katana, which is straight before quenching. Differential quenching causes martensite to form predominantly in the edge of the blade rather than the back; as the edge expands, the blade takes on a gently curved shape."
-Wikipedia article on martensite
That's pretty cool, didn't realise it was straight at first. Gotta be tricky to get it to curve exactly right. Niftiest thing I've learned from this materials engineering stuff so far.
"Martensite has a lower density than ferrite, so that the transformation between phases often results in a relative change of volume: this can be seen vividly in the Japanese Katana, which is straight before quenching. Differential quenching causes martensite to form predominantly in the edge of the blade rather than the back; as the edge expands, the blade takes on a gently curved shape."
-Wikipedia article on martensite
That's pretty cool, didn't realise it was straight at first. Gotta be tricky to get it to curve exactly right. Niftiest thing I've learned from this materials engineering stuff so far.
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