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结合纯金属单原子(OA)理论和Debye-Grüneisen模型,采用CALPHAD方法确定的晶格稳定参数,研究了SGTE纯单质数据库中fcc-,hcp-和bcc-Cu的原子状态及物理性质(原子势能、原子动能、原子体积、体弹性模量和热膨胀系数等)随温度的变化关系.结果表明:电子结构计算结果与第一原理方法非常接近.3种晶体结构的电子结构差别不大,单键半径非常接近.原子体积顺序为:Va(bcc)>Va(hcp)>Va(fcc);共价电子浓度顺序为:nc(fcc)>nc(hcp)>nc(bcc);原子势能大小顺序为:εp(fcc)<εp(hcp)<εp(bcc);晶格稳定性顺序为:△G(fcc)>△G(hcp)>△G(bcc).原子动能随温度的增加幅度约为势能的3-4倍.

参考文献

[1] Kaufman L,Bernstein H.Computer Calculation of Phase Diagram.New York:Academic Press Inc.,1970:1
[2] Saunders N,Miodownik A P.CALPHAD (Calculation of PhaseDiagrams):A Comprehensive Guide.New York:Pergamon,1998:1
[3] Dinsdale A T.CALPHAD,1991; 15:317
[4] Wang Y,Curtarolo S,Jiang C.CALPHAD,2004; 28:79
[5] Xie Y Q,Tao H J,Peng H J.Physica,2005; 366B:17
[6] Xie Y Q.Sci Chin,1993; 36E:90
[7] Xie Y Q.Trans Nonferrous Met Soc Chin,1994; 4(3):63
[8] Xie Y Q,Zhang X D,Zhao L Y.Sci Chin,1993; 36A:487
[9] Xie Y Q,Ma L Y,Zhang X D.Sci Chin,1993; 36A:612
[10] Xie Y Q.Acta Metall Mater,1994; 42:3705
[11] Xie Y Q.Sci Chin,1998; 41E:146
[12] Xie Y Q,Zhang X D.Sci Chin,1998; 41E:157
[13] Xie Y Q,Zhang X D.Sci Chin,1998; 41E:225
[14] Xie Y Q,Zhang X D.Sci Chin,1998; 41E:348
[15] Xie Y Q,Peng K,Liu X B.Physica,2004; 344B:5
[16] Xie Y Q,Liu X B,Peng K.Physica,2004; 353B:15
[17] Xie Y Q,Peng H J,Liu X B.Physica,2004; 362B:1
[18] Yu F X,Xie Y Q,Nie Y Z.Trans Nonferrous Met Soc Chin,2004; 14:1041
[19] Xie Y Q.Acta Metall Sin,1998; 34:1233(谢佑卿.金属学报,1998;34:1233)
[20] Xie Y Q,Zhang X D.Acta Metall Sin,1994; 30:531(谢佑卿,张晓东.金属学报,1994;30:531)
[21] Guo Y Q,Yu R H,Zhang R L.J Phys Chem,1998; 102B:9
[22] Pauling L.The Nature of the Chemical Bond.Ithaca:Cornell University Press,1960:56
[23] Kirby R K,Hahn T A,Rothroch B D.American Institute of Physics Handbook.New York:McGraw-Hill Book Company,1972:4
[24] Eckardt H,Fritsche L,Noffke J.J Phys,1984; 14F:97
[25] Kittel C.Solid State Physics.New York:John Wiley and Sons.Inc.,1976:55
[26] Ozolin V,Wolverton S C,Zunger A.Phys Rev,1998; 57B:6427
[27] Wei S H,Mbaye A A,Ferreira L G.Phys Rev,1987; 36B:4163
[28] Chen J R,Li C J.Phase Transitions of Solids in Metals and Alloys.Beijing:Metallurgical Industry Press,1997:8(陈景榕,李承基.金属与合金中的固态相变.北京:冶金工业出版社,1997:8)
[29] Zhang Z J.J Phys:Condens Matter,1998; 10:L495
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