金属学报  1981, Vol. 17 Issue (4): 467-477

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用点阵动力学方法计算立方金属的脆断表面能

孙校开;熊良钺;龙期威

中国科学院金属研究所;中国科学院金属研究所;中国科学院金属研究所

EVALUATION OF BRITTLE-FRACTURE SURFACE ENERGY IN CUBIC METALS BY LATTICE DYNAMICAL METHOD

by Sun Xiaokai; Xiong Liangyue and Long Qiwei (Lung Chi-wei)(Institute of Metal Research; Academia Sinica)

孙校开;熊良钺;龙期威. 用点阵动力学方法计算立方金属的脆断表面能[J]. 金属学报, 1981, 17(4): 467-477.
, , . EVALUATION OF BRITTLE-FRACTURE SURFACE ENERGY IN CUBIC METALS BY LATTICE DYNAMICAL METHOD[J]. Acta Metall Sin, 1981, 17(4): 467-477.

摘要 参考文献 相关文章 Metrics 全文: PDF(721 KB)   摘要: 本文在Tyson模型的基础上,应用点阵动力学线性响应的理论方法,导出了脆断发生时解理面上原子的响应位移,并进而给出金属脆断表面能的计算公式。这种处理方式既保持了解理断裂面是结晶的表现,避免了局域“熔化”和“沸腾”模拟脆断的简单模型中出现的非晶化问题,也对解理面上原子临界位移做了合理估计,避免了人为规定临界位移的随意性,同时,从理论上得出的脆断时产生的声发射信号与实际探测到的量级相近。用本文中发展的方法,计算了若干体心和面心立方金属的脆断表面能,其结果与实验值为同一数量级。 Abstract：Using the method of linear response theory in lattice dynamics on the basis of Tyson's model, the response displacements of atoms on cleavage plane at the incipience of brittle fracture was derived and an expression for evaluating brittle fracture surface energy of metals was found. The brittle fracture surface energy for a number of bcc and fcc metals has been calculated and the results coincide with order of magnitude in experimental measurements. 收稿日期: 1981-04-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 孙校开 熊良钺 龙期威 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1981/V17/I4/467 [1] 龙期威,中国物理学会年会上的报告,1978年8月庐山.龙期威,全国断裂物理与断裂力学学术讨论会(武汉)文集,1978年10月. [2] Caglioti, G., Rizzi, G. and Bilello, J. C., J. Appl. Phys., 42 (1971) , 4271; J. Appl. Phys. 43 (1972) , 3600． [3] Tyson, W. R., J. Appl. Phys., 47 (1976) , 459． [4] Kwok, P. C. K., Solid State Phys., 20 (1967) , 213． [5] Boffi, S., Proc. Int. School Phys. Enrico Fermi Course LXI Ed. by G. Caglioti, North-Holland New York, 1976, p. 315． [6] Gilman, J. J., Fracture of Solid, Ed. by D. C. Drucker and J. J. Gilman, New York, 1963, p. 541． [7] A.塞格,晶体的范性及其理论,张宏图译,科学出版社,1963． [8] Jones, H. and Leak, G. M., Metal Sci. J., 1 (1967) , 211．m No related articles found! Viewed Full text Abstract Cited   Shared      Discussed