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Bi / MnBi eutectic MnBi sheet in the formation of lobular

Eutectic induced phase (1eadingphase) is the MnBi phase the minimum distance between atoms along the surface of the low index direction of growth. The result is the growth direction of deviation from the total goods [ooo1] Bj and 00 A pair】 M direction. Therefore,moncler jackets sale, in the solidification rate is high (eg,moncler jackets cheap, R> 13.9,moncler cheap, um -s-), as [ooo1] and [0oo1] M is the crystal structure of high-order symmetry axis,ugg boots billig, easy to grow into a fibrous Bi / MnBi eutectic. solidification rate is low (such as R <0.9/an-s) , due to bias the direction of crystal growth axis of the low times, Minister of the sample base sheet carved into leaf / MnBi eutectic solidification rate in between the time may be due to one-way to the start of solidification is at rest, as well as the growth lag caused by subsequent changes in the specific process to be studied .3 Conclusions (1) the solidification rate is low (such as R = 1.5/an-s-), lobular in the initial stages of the formation of flake Bi / MnBi eutectic organization. Therefore, the low solidification rate is not conducive to recovery from raw materials, the desired station with regular access to the organization; (2) lobular sheet Bi / MnBi eutectic growth direction of the deviation from the fibrous Bi / MnBi eutectic I ~ J [0001 ] Biff ~ [O001] M growth direction. References 1NotisMR, ShahDM, etaLStructureandMagneticPropertiesofDirectionallysolidifiedBi / MnBiEut. ccicAlloys.1EEETransOilMagnetics, 1979; Mag-I5: (3) 9572ChenTJAppt, 1974; 45:23583 ElloitR.EutecticSolidificationProcessingCrystaHineandGlossyAlloyLondon: Butterworths & Co (publishers) Std., 19834 Ph.D. thesis at the base of Southeast University, 1992:706 period for payment,: Bi / MnBi eutectic MnBi in the formation of lobular sheet A285MoRPHoLoGYANDFoRMATIoNMECHANIoFUNEXPECTEDSTRUCTUEREINBi, MnBiEUTECTIC Ⅳ UCoMPoSITEYUJin, JIANGJianqing, WANGWu, SHUGuan ~ i (SoutheasternUniveristyNanfing) (Manuscriptrec ~ ved21June, 1993 ; inrevisedform12November, 1993) ABSTRACTBi / MnBieutecticalloywasunidirectionallysolidifiedwithgrowthrateva-ringinawiderangetoproduce / nsitucomposite.ItisfoundthatanewkindofleaflikeBi / MnBieutecticstructureappearedintheoriginationandeveninthewholelengthofthesample.Themorphology, crystallographicalreiationshipandtheformationmechanismofthisunexpectedBi/MnBieutecticstructurearestudiedindetail.KEYW0RDSbismuth-basealloy, compositematerials, Bi / MnBieutectic, eutecticgrowthCorrespondent: YUJin, DepartmentofMateriabSoutheasternUnits.Nanjbtg210018

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