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Thermodynamic re-assessment of Fe-Ti binary system 被引量:4

Fe-Ti二元体系的热力学重新优化(英文)
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摘要 The Fe-Ti binary system was re-assessed using the CALPHAD method in order to improve the capability of being extrapolated to a ternary or higher-order system. Compared with previous assessments, the main focus was put on the thermodynamic description of the two intermetallic compounds Fe2Ti and FeTi. The C14_Laves phase Fe2Ti was described by the two-sublattice model, which is widely used at present. By checking the homogeneity range on the boundary of the ternary systems involving the binary, the phase boundary of this compound was further confirmed. The FeTi phase with a BCC_B2 crystal structure was treated as the ordered phase of the BCC_A2 phase and a unified Gibbs energy function was used to describe both the ordered and disordered phases. Reproduction of the specific heat capacities of these compounds was another aspect paid particular attention to. Comprehensive comparisons of the calculated and experimental results regarding the phase diagram and thermodynamic properties show a good agreement between them and prove the validity of the present thermodynamic description. 为提高Fe-Ti二元系外推到三元或多元体系的能力,应用CALPHAD方法重新优化了该二元系。与前人的优化工作相比,重点放在对两个二元金属间化合物Fe2Ti和FeTi的热力学描述上。因目前普遍采用双亚点阵模型来描述C14_Laves相,所以采用双亚点阵模型来描述Fe2Ti相。通过检验包含Fe-Ti二元系的三元体系Fe-Ti边界上Fe2Ti相的均匀化范围进一步证实了Fe2Ti相的相边界。FeTi相具有BCC_B2晶体结构,因而将其处理成为BCC_A2相的有序相,并且用统一的Gibbs 能函数来描述有序和无序相。另外一个特别关注的方面就是重现这两个化合物的实测热容。计算结果与有关相图和热力学性质实验结果的广泛对比显示两者符合得很好,从而证明了所得热力学描述的有效性。
出处 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2012年第9期2204-2211,共8页 中国有色金属学报(英文版)
基金 Project (IP08-092009) supported by Sino Swiss Science and Technology Cooperation (SSSTC) Project (50971136) supported by the National Natural Science Foundation of China Project (1343-71134001013) supported by the Scholarship Award for Excellent Doctoral Student granted by Ministry of Education of China
关键词 Fe-Ti system order-disorder transition thermodynamic assessment phase diagram CALPHAD Fe-Ti体系 有序无序转变 热力学优化 相图 相图计算
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  • 1CACCIAMANi G, KEYZER J D, FERRO R, KLOTZ U E, LACAZE J, WOLLANTS P. Critical evaluation of the Fe-Ni, Fe-Ti and Fe-Ni-Ti alloy systems [J]. Intermetallics, 2006, 14(10-11): 1312-1325.
  • 2XU L, SHI J, CAO W Q, WANG M Q, HUI W J, DONG H. Yield strength enhancement of martensitic steel through titanium addition [J]. J Mater Sci, 2011, 46(10): 3653-3658.
  • 3SCHLAPBACH L. Hydrogen in intermetallic compounds I+I! [M]. Heidelberg: Springer, 1988.
  • 4ZUTTEL A. Materials for hydrogen storage [J]. Mater Today, 2003, 6(9): 24-33.
  • 5OGURO K, OSUMI Y, SUZUKI H, KATO A, IMAMURA Y, TANAKA H. Hydrogen storage properties of TiFel-xNiyM, alloys [J]. 1. Less Common Met, 1983,89(1): 275-279.
  • 6LEE S M, PERNG T P. Correlation of substitutional solid solution with hydrogenation properties of TiFel-xMx (M=Ni, Co, AI) alloys [J]. J Alloys Compd, 1999,291(1-2): 254-261.
  • 7HARI KUMAR K C, DUMITRESCU L, SUNDMAN B, WOLLANTS P. Thermodynamic assessment of the Fe-Ti system with special emphasis on the modeling of the FeTi(B2) phase [C]//ANSARA I, BERNARD C. Proceedings of the Calphad XXVIII Conference. Grenoble: INPG, 1999: 95.
  • 8HELLAWELL A, HUME-ROTHERY W. The constitution of alloys of iron and manganese with transition elements of the first long period [J]. Phil Trans R Soc LondA, 1957,249(968): 417-459.
  • 9KO M, NISHIZAWA T. Effect of magnetic transition on the solubility of alloying elements in alpha iron [J]. J Jpn Inst Met, 1979, 43(2): 118-126.
  • 10SPEICH G R. Precipitation of Laves phases from iron-niobium (columbium) and iron-titanium solid solutions [J]. Trans AIME, 1962, 224: 850-858.

二级参考文献16

  • 1IVEY D G,NORTHWOOD D O.Hydrogen site occupancy in AB2 laves phases[J].Journal of the Less-Common Metals,1986,115(1):23-33.
  • 2SHALTIEL D,JACOB I AND DAVIDOV D.Hydrogen absorption and desorption of AB2 Laves-phase pseudobinary compounds[J].Journal of the Less-Common Metals,1977,53(1):117-131
  • 3JONSSON S.Assessment of Fe-Ti system[J].Metallurgical and Materials Transactions B,1998,29(2):361-370.
  • 4RUCH M,ARIAS D.Comments on the equilibrium diagram of the Ti-Zr system[J].Scripta Metall Mater,1993,29(4):533-538.
  • 5JIN ZHAN-PENG.Scand.Study of the range of stability of sigma phase in some ternary systems[J].J Metall,1981,10:279-287.
  • 6SVECHNIKOV V N,SPEKTOR A T.The iron-zirconium phase diagram[J].Proc Acad Sci USSR,Chem Sect,1962,142:231-233.
  • 7MAHDOUK K,GACHON J C.Investigation of the iron-rich corner of the Fe-Hf-Zr system[J].J Phase Equilibria,1996,17:218-227.
  • 8ABRAHAM D P,RICHARDSON J W,MCDEAVITT S M.Formation of the Fe23Zr6 phase in an Fe-Zr alloy[J].Scr Mater,1997,37:239-244.
  • 9GUSE L N,MALAKHOVA T O.X-ray investigations of alloys of iron with zirconium,iron-rich (Fe-Fe2Zr)[J].Metallofiz (Kiev),1973,46(2):111-113.
  • 10SOSTARICH M,KHAN Y.Stability and crystallization behaviour of amorphous Fe90Zr10[J].Z Metallkd,1982,73:706-709.

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