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研究了高铌TiAl合金Ti-44Al-8Nb-0.2W-0.1B-0.1Y (at%)分别与Al2O3/ZrO2/Y2O3坩埚的界面反应.测得界面反应层的厚度分别为40,170和20 μm.研究中最大的发现在于Ti-44Al-8Nb-0.2W-0.1B-0.1Y(at%)合金在3种坩埚中凝固后显微组织的转变.经测定该合金在3种坩埚中凝固获得的试样中氧含量分别为0.35,0.41和0.11 (at%).由于在合金熔化和凝固过程中,坩埚中的氧元素扩散进入合金基体,较高的氧含量导致合金显微组织发生转变,在与Al2O3和ZrO2坩埚反应的合金中发生了包晶反应.作为对比,选取一种低铌含量的TiAl合金Ti-49.5Al-2Cr-2Nb.经测定在3种坩埚中反应的氧含量分别为0.40,0.63和0.25 (at%),但是组织却没有明显的差异.

参考文献

[1] Lin J P;Xu X J;Wang Y L et al.[J].Intermetallics,2007,15(5-6):668.
[2] Xu X J;Lin J P;Wang Y L et al.[J].Journal of Alloys and Compounds,2006,414(1-2):131.
[3] Zhang WJ.;Appel F.;Nieh TG.;Deevi SC.;Chen GL. .A preliminary study on the creep behavior of Ti-45Al-10Nb alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2001(1/2):250-253.
[4] Ding X F;Lin J P;He J P et al.[J].Rare Metals,2010,29(03):292.
[5] Lin J P;Xu X J;Wang Y L et al.[J].Materials Science Forum,2004,475:785.
[6] Lin K F;Lin C C .[J].Journal of the American Ceramic Society,1999,82(11):3179.
[7] Myoung-Gyun Kim;Young-Jig Kim .[J].Metals and Materials International,2002,8(03):289.
[8] Gomes F;Joaquim Barbosa;Silva Ribeiro C .[J].Intermetallics,2008,16:1292.
[9] Zollinger J;Lapin J;Daloz D et al.[J].Intermetallics,2007,15(10):134.
[10] Ma Y C;Jiang Z G;Chen B et al.[J].Journal of Materials Science and Technology,2010,26(02):131.
[11] Lin K F;Lin C C .[J].Journal of Materials Science,1999,34:5899.
[12] Liu A H;Li B S;Nan H et al.[J].Rare Metal Materials and Engineering,2008,37(06):956.
[13] Misra A K .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1991,22(03):715.
[14] Jia Q;Cui YY;Yang R .A study of two refractories as mould materials for investment casting TiAl based alloys[J].Journal of Materials Science,2006(10):3045-3049.
[15] Chevalier J P;Lamirand M;Bonnentien J L .[J].Intermetallics,2005,842:145.
[16] Lu X;He X B;Zhang B et al.[J].Intermetallics,2009,17:840.
[17] Huang A;Loretto M H;Hu D et al.[J].Intermetallics,2006,14(07):838.
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