Qikai L, Yue Zhang, Mark Hoffman, and Wuyang Chu, Molecular Dynamics Simulation of Dealloyed Layer-induced Tensile Stress in Cu3Au, J. Univ. Sci. Technol. Beijing, 8(2001), No. 4, pp. 295-298.
Cite this article as:
Qikai L, Yue Zhang, Mark Hoffman, and Wuyang Chu, Molecular Dynamics Simulation of Dealloyed Layer-induced Tensile Stress in Cu3Au, J. Univ. Sci. Technol. Beijing, 8(2001), No. 4, pp. 295-298.
Qikai L, Yue Zhang, Mark Hoffman, and Wuyang Chu, Molecular Dynamics Simulation of Dealloyed Layer-induced Tensile Stress in Cu3Au, J. Univ. Sci. Technol. Beijing, 8(2001), No. 4, pp. 295-298.
Citation:
Qikai L, Yue Zhang, Mark Hoffman, and Wuyang Chu, Molecular Dynamics Simulation of Dealloyed Layer-induced Tensile Stress in Cu3Au, J. Univ. Sci. Technol. Beijing, 8(2001), No. 4, pp. 295-298.
Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China
School of Materials Science & Engineering, University of New South Wales, Sydney 2052, Australia
中文摘要
During stress corrosion cracking of Cu3Au alloy, there is a dealloyed layer on its surface because of preferential dissolution of Cu, and there is a linear distribution of Cu vacancy concentration in the dealloyed layer. Molecular dynamics simulation has been done on the three-dimensional crystal (about 148 000 atoms) by employing the embedded-atom method (EAM) potential. Simulation shows that Cu3Au crystal in which there is a dealloyed layer on one surface and one end is fixed will be deflected after relaxing for a long time because of a tensile stress generated at or near the dealloyed layer interface. The deflection and then the tensile stress increase with increasing the depth of dealloyed layer and the vacancy concentration in the dealloyed layer.
During stress corrosion cracking of Cu3Au alloy, there is a dealloyed layer on its surface because of preferential dissolution of Cu, and there is a linear distribution of Cu vacancy concentration in the dealloyed layer. Molecular dynamics simulation has been done on the three-dimensional crystal (about 148 000 atoms) by employing the embedded-atom method (EAM) potential. Simulation shows that Cu3Au crystal in which there is a dealloyed layer on one surface and one end is fixed will be deflected after relaxing for a long time because of a tensile stress generated at or near the dealloyed layer interface. The deflection and then the tensile stress increase with increasing the depth of dealloyed layer and the vacancy concentration in the dealloyed layer.
下载: