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The effect of manganese and nickel segregation on allotriomorph ferrite nucleation in austenite grain boundary

机译：锰和镍偏析对奥氏体晶界血氧二氧化硅含量成核的影响

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The effect of manganese and nickel segregation on allotriomorph ferrite nucleation from austenite grain boundary was investigated.The chemical compositions of steels were Fe-0.3C-1Mn and Fe-0.3C-1Ni (mass％).These steels had the same Ae3 temperature calculated by Thermo-calc.The steels were transformed at the same temperature.The number of nucleated ferrite from austenite grain boundary in Fe-C-Mn steel was less than that in Fe-C-Ni.Manganese and nickel segregations in austenite grain boundary were measured by aberration corrected STEM equipped with EDS.Both Mn and Ni were enriched in austenite grain boundary.Manganese exhibited higher enrichment than nickel.It is considered austenite grain boundary energy in Fe-C-Mn steel is lower than that in Fe-C-Ni steel,as the result,the nucleation rate in Fe-C-Mn is lower than in Fe-C-Ni.
机译：研究了锰和镍偏析对奥氏体晶界的同种异体叶片铁素体成核的影响。钢的化学组成是Fe-0.3C-1Mn和Fe-0.3℃-1Ni（质量％）。这些钢的计算结果相同的AE3温度通过Thermo-Calc。在相同的温度下转化钢。Fe-C-Mn钢中奥氏体晶界的成核铁素体的数量小于Fe-C-Ni.Manganese和奥氏体晶界中的镍偏析。通过富含EDS的像差矫正杆测量。富含奥氏体晶界的腐蚀茎。奥氏体晶界富含抗钙质的富含富镍。对于Fe-C-Mn钢中的奥氏体晶界能量低于Fe-C-中的奥氏体晶界能量。结果镍钢，Fe-C-Mn中的成核速率低于Fe-C-Ni。

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