Itiswellestablishedthatdipolarinteractionsincolloidalmagneticfluidsarethemechanismofthepatternformationsuchaschainsorcolumns.Wereportthefirstobservationofstructureformationinsteelsexposedtoamagneticfield.Amagneticfieldhigherthan2Tisfoundtoalignthemicrostructureofsteelsparalleltothefieldduringthetransformationfromtheparamagneticfccphasetotheferromagneticbccphaseandviceversa.Evidenceispresentedforthedipolarinteractionsbetweentheellipsoidalnucleiinthebackgroundofthematrixwithadifferentmagneticcharacter.Electronbackscatteringdiffractionhasrevealedthatthetransformingnucleiinamagneticfieldareatrandomintheircrystallographicorientation.r2002ElsevierScienceB.V.Allrightsreserved.
磁场诱导的钢铁微观结构