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8/ The different regions in the phase space represent different crystalline structures in the steel As steel heats the iron atoms move apart and the carbon atoms migrate into the interstitial spacespic.twitter.com/01hFRUFFWb
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9/ and so these different structures are called "allotropes" and if you cool slowly the carbon migrates back out of the steel cubic structure ...but if you cool QUICKLY the sort of Brownian-motion readjustment doesn't have a chance to happen and the Fe cage shrinks rapidly >>
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Because I know you appreciate this kind of thing:pic.twitter.com/FXUPzhOldr
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