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Ti-Zr二元合金在β相區(qū)的互擴散行為研究
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“973”項目（2007CB613802）和“211”引智項目


Research on Interdiffusion Behavior of Ti-Zr Binary Alloy in the β Phase
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    摘要:

    通過擴散偶技術(shù)，利用電子探針（EPMA）研究了Ti-Zr二元合金在β相區(qū)（950至1150 ℃）的互擴散行為。采用Den Broeder方法及Hall修正法計算了Ti-Zr二元合金的互擴散系數(shù), 其范圍為10-14~10-12 m2/s；計算了擴散激活能Q和頻率因子D0，兩者均隨Zr濃度的增加呈現(xiàn)先增加后減小的規(guī)律，其峰值均出現(xiàn)在50at%Zr濃度附近。用Vignes-Birchenall方法計算了Ti-Zr二元合金在擴散組元極限濃度處的雜質(zhì)擴散系數(shù)，并與用Hall修正方法計算的互擴散系數(shù)進行了對比，二者結(jié)果比較接近。

    Abstract:

    The interdiffusion behavior of Ti-Zr binary alloy in the β phase (950 to 1150 oC) was studied through the diffusion couples by EPMA. The interdiffusion coefficients of the Ti-Zr binary alloy were calculated by the Den Broeder method and modified by the Hall method in the concentration limits between 10-14 and 10-12 m2/s. The diffusion activation energy Q and frequency factor D0 were calculated. The results show that Q and D0 increase at first and then decrease with the increase of Zr concentration and a summit can be got at about 50at% Zr concentration. The impurity diffusion coefficients in concentration limits were calculated by Vignes-Birchenall method and they were compared with the interdiffusion coefficients determined by Hall modification method. It is found that their results are similar.

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馮 亮,李金山,崔予文,黃 磊,寇宏超,周 廉. Ti-Zr二元合金在β相區(qū)的互擴散行為研究[J].稀有金屬材料與工程,2011,40(4):610~614.[Feng Liang, Li Jinshan, Cui Yuwen, Huang Lei, Kou Hongchao, Zhou Lian. Research on Interdiffusion Behavior of Ti-Zr Binary Alloy in the β Phase[J]. Rare Metal Materials and Engineering,2011,40(4):610~614.]
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  • 收稿日期:2010-04-25
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