超细镍纳米线拉伸性能的温度和应变率相关性的分子动力学研究
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| Published in | 中国有色金属学报：英文版 no. 11; pp. 3353 - 3361 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
2013
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1003-6326 |
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| Bibliography: | Wei-dong WANG; Cheng-long YI, Kang-qi FAN School of Electrical and Mechanical Engineering, Xidian University, Xi＇an 710071, China 43-1239/TG ultrathin nickel nanowires; temperature dependence; strain rate dependence; tensile properties; molecular dynamics simulation Based on the EAM potential, a molecular dynamics study on the tensile properties of ultrathin nickel nanowires in the （100〉 orientation with diameters of 3.94, 4.95 and 5.99 nm was presented at different temperatures and strain rates. The temperature and strain rate dependences of tensile properties were investigated. The simulation results show that the elastic modulus and the yield strength are gradually decreasing with the increase of temperature, while with the increase of the strain rate, the stress--strain curves fluctuate more intensely and the ultrathin nickel nanowires rupture at one smaller and smaller strain. At an ideal temperature of 0.01 K, the yield strength of the nanowires drops rapidly with the increase of strain rate, and at other temperatures the strain rate has a little influence on the elastic modulus and the yield strength. Finally, the effects of size on the tensile properties of ultrathin nickel nanowires were briefly discussed. |
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| ISSN: | 1003-6326 |