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1Effect of Electromagnetic Stirring on the Distribution of Nb Phase in Cu-5wt%Nb Alloys显示文摘The effect of electromagnetic stirring(EMS)on the distribution of Nb particles in solidified microstructure of a Cu-5wt%Nb alloy were studied.In this paper,we have Cu-5wt%Nb alloy remelted and solidified with or without electromagnetic stirring,to study the effect of EMS on the distribution of Nb phase and the hardness of ingots.The300A/16Hz EMS has refined the mircostrucrure of Cu-5%Nb alloy,with smaller particles sizes and larger amounts,and is benefit to the homogenous distribution of particles.The fitted lognormal distribution of particles diameter that in case without or with EMS are compared,and the EMS case has the highest frequency percentage in the range of smaller size.EMS considerably increased the hardness of Cu-5%Nb alloy ingot.ZHANG Xing-wu ZHANG Lin CHEN Shao-guang ZUO Xiao-wei WANG En-gang HE Ji-cheng 2012Journal of Iron and Steel Research(International)2012,19,S2:1
2Effect of Magnetic Field on Solidification Microstructure of Cu-20wt%Nb Alloys and Properties of the In-Situ Deformed Wires显示文摘Magnetic field has great impact on the second phase distribution in metal solidification process.In this paper,we have Cu-20wt%Nb alloy remelted and solidified with or without the imposition of magnetic field,to study the effect of magnetic field on the distribution of Nb phase and the properties of deformed wires.Magnetic field has an inhibiting effect on the ripening process of Nb particles,and is benefit to the prolongation of Nb-rich phase in deformed wires.Both the ultimate tensile strength and conductivity in 1 T case is larger than that in 0 T case.ZHANG Lin WANG Wen-bin WANG En-gang ZUO Xiao-wei LI Zhuang HE Ji-cheng 2012Journal of Iron and Steel Research(International)2012,19,S1:0
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