使用德拜模型和准谐近似,结合第一性原理方法,考察Nb、Zr、Sn加入对beta钛合金热膨胀系数的影响.研究表明:Nb对beta钛合金的热膨胀系数有较大的影响,而Zr、Sn的加入对热膨胀系数影响很小;beta钛合金热膨胀系数的变化主要源于合金元素对体系体模量的影响;体模量升高,体系热膨胀系数降低;但当体模量随成分变化较小时(如Zr、Sn),其它因素如体积因素的共同作用将使体系的热膨胀系数变化趋于复杂.
参考文献
| [1] | SAKAGUCHI N;MITSUO N;AKAHORI T;SAITO T,FURUTA T .Effects of alloying elements on elastic modulus of Ti-Nb-Ta-Zr system alloy for biomedical applications[J].Designing Processing and Properties of Advanced Engineering Materials Pts 1 and 2,2004,449(04):1269-1271. |
| [2] | Hao YL;Li SJ;Sun SY;Zheng CY;Hu QM;Yang R .Super-elastic titanium alloy with unstable plastic deformation[J].Applied physics letters,2005(9):1906-1-1906-3-0. |
| [3] | MORUZZI V L;JANAK J F;SCHWARZ K .Calculated thermal properties of metals[J].Physical Review B,1988,37:790-799. |
| [4] | Lu XG;Selleby M;Sundman B .Calculations of thermophysical properties of cubic carbides and nitrides using the Debye-Gruneisen model[J].Acta materialia,2007(4):1215-1226. |
| [5] | Qing Miao Hu;Rui Yang .Mechanical properties of structural materials from first-principles[J].Current opinion in solid state & materials science,2006(1):19-25. |
| [6] | ANDERSON O L .A simplified method for calculating Debye temperature from elastic constants[J].Journal of Physics and Chemistry of Solids,1963,24:909-917. |
| [7] | DUGDALE J S;MACDONALD D K C .The thermal expansion of solids[J].Physical Review,1953,89:832-834. |
| [8] | VITOS L.Computational quantum mechanics for materials engineers[M].Lodon:Springer-Verlag,2007 |
| [9] | PERDEW J P;BURKE K;ERNZERHOF M .Generalized gradient approximation made simple[J].Physical Review Letters,1996,77:3865-3868. |
| [10] | SOVEN P .Coherent-potential model of substitutional disordered alloys[J].Physical Review,1967,156:809-813. |
| [11] | GYORFFY B L .Coherent-potential approximation for a nonover lapping muffin-tin potential model of random substitutional alloys[J].Physical Review B,1972,5:2382-2384. |
| [12] | VITOS L;ABRIKOSOV I A;JOHANSSON B .Anisotropic lattice distortions in random alloys from first-pinciples theory[J].Physical Review Letters,2001,87:156401. |
| [13] | Wang K.;Reeber RR. .The role of defects on thermophysical properties: thermal expansion of V, Nh, Ta, Mo and W [Review][J].Materials Science & Engineering, R. Reports: A Review Journal,1998(3):101-137. |
| [14] | COLLINGS E W.Applied superconductivity,metallurgy,and physics of titanium alloys[M].New York:springer-verlag,1986 |
| [15] | Breme J.;Groh L.;Zhou Y. .DEVELOPMENT OF A TITANIUM ALLOY SUITABLE FOR AN OPTIMIZED COATING WITH HYDROXYAPATITE[J].Biomaterials,1995(3):239-244. |
| [16] | LEYENS C;PETERS M.Titanium and titanium alloys[M].WILEY-VCH,2003 |
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