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Nb/α-Ti Al体系的互扩散行为 被引量:2

Interdiffusion behavior in Nb/α-Ti Al ternary system
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摘要 采用反应扩散偶的方法,研究了Nb元素在a-Ti3 Al中的扩散行为.反应扩散偶经过120 h扩散退火,在高温(1 573 K)下生成了均匀的阶( Ti , Nb)扩散层;低温(1273,1 423 K)下生成不均匀的扩散区,相组成为Ti3Al( Nb) ,β-(Ti , Nb)及Nb2Al.采用Dayananda方法计算了体系的扩散系数,即根据一个扩散偶的浓度分布曲线计算体系的扩散系数.采用平均扩散系数来表征体系的扩散系数,得出扩散模型和相关扩散机理.结果表明:Ti和A1的主扩散系数比Nb的主扩散系数大5个数量级;Ti的主扩散系数是Al的2倍.Nb通过占据Ti的空位进行扩散,Nb的掺入阻碍了Ti元素扩散,从而提高了a-Tip A1体系的高温抗氧化性能 The α2 single phase interdiffusion behavior in Ti3Al-Nb ternary system was studied at the tem- perature of 1 273 K, 1 423 K, 1 573 K, using Ti3A1/Nb single phase diffusion couples. The uniform β-(Ti, Nb) phase was formed in mid of the diffusion couple after 120 hours diffusion annealing in the high tempera- ture. On the contrary, the nonuniform diffusion layers, including Ti3Al(Nb), β-(Ti, Nb) and Nb2Al, were formed in low temperature. The interdiffusion coefficients were calculated by the method of Dayananda, which can evaluate by the concentration dependence in one couple only. The calculation results show that the inter- diffusion coefficients of Ti and Al is five order of magnitude larger than Nb, and Nb atoms are considered to occupy Ti sites in Ti2Al, the exchanges with vacancies on Ti sublattice played a leading role in the diffusion of Ti3Al. These results can provide a theoretical basis for the mechanisms of Nb improving the oxidation resist- ance of Ti3Al.
作者 王文博 周春根 Wang Wenbo Zhou Chungen (School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China)
出处 《北京航空航天大学学报》 EI CAS CSCD 北大核心 2012年第10期1380-1383,共4页 Journal of Beijing University of Aeronautics and Astronautics
基金 基金项目:国家自然科学基金资助项目(50971013)
关键词 氧化 扩散 互扩散 Nb/α-Ti3Al oxidation diffusion interdiffusion Ti3Al-Nb
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参考文献16

  • 1Kim Y W. Mierostructural evolution and mechanical properties of a forged gamma titanium aluminide alloy [J]. Acta Metallurgica et Materialia,1992,40(6) :1121 - 1134. 被引量:1
  • 2Liu C T. Recent advances in ordered intermetallics[ J]. Materials Chemistry and Physics, 1995,42 ( 2 ) :77 - 86. 被引量:1
  • 3Yamaguchi M, Inui H, Ito K. High-temperature structural intermetallics [ J]. Acta Materialia,2000,48 ( 1 ) :307 - 322. 被引量:1
  • 4Chu M S, Wu S K. Improvement in the oxidation resistance of α2-Ti3Al by sputtering Al film and subsequent interdiffusion treatment [ J ]. Surface Coating Technology, 2004, 179 ( 2/3 ) : 257 - 264. 被引量:1
  • 5Fang Wei, Ko Se Hyun, Hashimoto Hitoshi. High temperature oxidation behavior of Ti3Al-Nb alloys prepared by pulse discharge sintering [ J ]. Material Science and Engineering : A, 2002,329/ 330/331:708 - 713. 被引量:1
  • 6王衍行,林均品,贺跃辉,王艳丽,林志,陈国良.Reaction mechanism in high Nb containing TiA1 alloy by elemental powder metallurgy[J].中国有色金属学会会刊:英文版,2006,16(4):853-857. 被引量:3
  • 7王兴军,常海威,雷明凯.Nb合金化γ—TiAl的氧化热力学理论分析[J].金属学报,2001,37(8):810-814. 被引量:5
  • 8Rusing J, Herzig C. Concentration and temperature dependence of titanium self-diffusion and interdiffusion in the intermetallic phase Ti3Al [ J ]. Intermetallics, 1996,4 ( 8 ) :647 - 657. 被引量:1
  • 9Brever J, Wilger T, Friesel M, et al. Interstitial and substitutional diffusion of metallic solutes in Ti3Al [ J ]. Intermetallic, 1999,7 (3/4) :381 -388. 被引量:1
  • 10Dayananda M A. Average effective interdiffusion coefficients and matano plane composition[J]. Metallurgical and Materials Transactions A, 1996,27 (9) :2504 - 2509. 被引量:1

二级参考文献27

  • 1李俊涛.东北大学博士学位论文[M].沈阳,1997.103. 被引量:1
  • 2Hao Y L,Acta Mater,1999年,47卷,1129页 被引量:1
  • 3Zhang F,Intermetallics,1997年,5卷,471页 被引量:1
  • 4李俊涛,博士学位论文,1997年,103页 被引量:1
  • 5Stroosnijder M F,Oxidation Metal,1996年,46卷,19页 被引量:1
  • 6Nickel H,Microchim Acta,1995年,119卷,23页 被引量:1
  • 7Kattner U R,Metal Trans.A,1992年,23卷,2081页 被引量:1
  • 8Lei M K,J Mater Sci Lett,2000年,19卷,1839页 被引量:1
  • 9Lei M K,Mater Chem Phys,2000年,65卷,249页 被引量:1
  • 10COLINET C,PASTUREA L,NGUYEN D,et al.Phase-stability study of the Al-Nb system[J].Physical Review B,1997,56(2):552-565. 被引量:1

共引文献6

同被引文献24

  • 1孙育峰,曹春晓.Nb,Mo,V含量对Ti3Al基合金抗氧化性能的影响[J].航空材料学报,1994,14(2):17-22. 被引量:4
  • 2黄劲松,黄岚,张永红,刘彬,刘咏,贺跃辉,黄伯云.热处理工艺对Ti-45Al-7Nb-0.15B-0.7W合金微观组织的影响[J].材料热处理学报,2006,27(6):78-83. 被引量:9
  • 3WU Xin-hua. Review of alloy and process development of TiA1 alloys [ J ]. Intermetallics,2006,14 ( 10/11 ) : 1114 - 1122. 被引量:1
  • 4Clemens H, Kestler H. Processing and applications of intermetallic gamma-TiAl-based alloys[ J ]. Advanced Engineering Materials,2000,2 ( 9 ) :551 - 570. 被引量:1
  • 5Clemens H, Chladil H F, Wallgram W, et al. In and ex situ investigations of the I~-phase in a Nb and Mo containing ',/-TiAI based alloy [ J ]. Intermetallics, 2008,16 ( 6 ) :82"/ - 833. 被引量:1
  • 6Schwaighofer E,Clemens H, Mayer S,et al. Mierostruetural design and mechanical properties of a cast and heat-treated intermetallic multi-phase ',/- TiM based alloy[ J ]. lntermetanics ,2014,44 : 128 - 140. 被引量:1
  • 7Niu It Z, Chen ~ Y, Xiao S L, et al. Mierostructure evolution and mechanical properties of a novel beta ~/-TiAI alloy[ J ]. lntermetallics,2012,31:225 -231. 被引量:1
  • 8Hodge A M, Hsiung L M, Nieh T G. Creep of nearly lamellar TiAI alloy containing W [ J ]. Scripta Materialia,2004,51 (5) :411 -415. 被引量:1
  • 9Zhang H, Li Z C, He L L, el al. Reciprocal space analysis of ~ phase precipitates in a TiAIW alloy[ J ]. Materials Science and Engineering A ,2005, 403(1/2) :120 - 124. 被引量:1
  • 10Schloffer M,Iqbal F, Gabrisch H, et al. Microstructure development and hardness of a powder metallurgical multi-phase ",/-TiA1 based alloy [ J ]. Intermetallics. 2012,22 : 231 - 240. 被引量:1

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