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Ti-2.5Cu,Ti-3Fe,Ti-3Cr合金鑄錠的偏析
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TG146.23

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國家“863”高技術(shù)計劃資助項目(2001AA332010)


Segregation of Ti-2.5Cu, Ti-3Fe and Ti-3Cr Alloy Ingots
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    摘要:

    通過對Ti-2.5Cu,Ti-3Fe,Ti-3Cr鈦合金進行微區(qū)成分和宏觀成分的對比研究,得出了3種合金鑄錠中合金元素宏觀和微觀偏析規(guī)律。在等軸晶內(nèi),3種元素含量均沿晶粒生長方向增加,其中Cu,F(xiàn)e元素偏析明顯,Cr元素偏析程度小;柱狀晶內(nèi),Cu,F(xiàn)e,Cr的含量均沿晶粒生長方向增加,但偏析均不明顯;晶界處的平均Cu,F(xiàn)e含量明顯低于晶內(nèi),而Cr含量則遠遠高于晶內(nèi),Cr在晶界偏析明顯。宏觀方面,3種元素均向鑄錠的頂部和中心富集,其中Cu和Fe的偏析程度較大而Cr的偏析程度小,徑向的偏析程度比軸向嚴重。

    Abstract:

    The segregation of Ti-2.5Cu, Ti-3Fe and Ti-3Cr, in Ti-alloy ingots has been studied. It was found that in equiaxed grains, segregation of Cu and Fe is obvious and segregation of Cr is slight. In columnar grains, segregation of Cu, Fe, and Cr is slight. In both cases the contents of Cu, Fe, and Cr increase along the directions of grain growing. It is rich in Cu and Fe in grains; but it is rich in Cr at grain boundaries. In the bulk it is rich in Cu, Fe and Cr on the top and radial zone of the ingots.

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劉軍林 趙永慶 周廉. Ti-2.5Cu,Ti-3Fe,Ti-3Cr合金鑄錠的偏析[J].稀有金屬材料與工程,2004,33(7):731~735.[Liu Junlin, Zhao Yongqing, Zhou Lian. Segregation of Ti-2.5Cu, Ti-3Fe and Ti-3Cr Alloy Ingots[J]. Rare Metal Materials and Engineering,2004,33(7):731~735.]
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  • 最后修改日期:2002-12-12
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