磁场诱导的钢铁微观结构

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Itiswellestablishedthatdipolarinteractionsincolloidalmagneticfluidsarethemechanismofthepatternformationsuchaschainsorcolumns.Wereportthefirstobservationofstructureformationinsteelsexposedtoamagneticfield.Amagneticfieldhigherthan2Tisfoundtoalignthemicrostructureofsteelsparalleltothefieldduringthetransformationfromtheparamagneticfccphasetotheferromagneticbccphaseandviceversa.Evidenceispresentedforthedipolarinteractionsbetweentheellipsoidalnucleiinthebackgroundofthematrixwithadifferentmagneticcharacter.Electronbackscatteringdiffractionhasrevealedthatthetransformingnucleiinamagneticfieldareatrandomintheircrystallographicorientation.r2002ElsevierScienceB.V.Allrightsreserved.

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